巻号一覧
15 巻, 9 号
選択された号の論文の44件中1～44を表示しています
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Shigeo Tanaka, Michiaki Furukawa, Shiro Iwata, Masuo Yagi, Hiroshi Ama ...1960 年 15 巻 9 号 p. 1547-1551
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありExcitation functions for the (α, p), (α, n), (α, pn), (α, 2n), (α, p2n+α, 3n), (α, αn), (α, αpn) and (α, α2n) reactions on Fe54 were measured by the activation method using a “stacked-foil” technique, the alpha-particle energies ranging from 10 MeV to 40 MeV. The predominance of proton emission over neutron emission has been observed. The ratios of σ(α, p)/σ(α, n) and σ(α, pn)/σ(α, 2n) in the region of maximum yield were found to be 3.4 and 60, respectively. The ratio of σ(α, αpn)/σ(α, α2n) at 40 MeV was about 180. A small “knee” was observed at the incident alpha-particle energy of about 20 MeV in the excitation function for the (α, 2n) reaction. The total reaction cross section was found to agree with the value calculated from continuum theory for a nuclear radius constant r0 of 1.7×10−13 cm assuming a nuclear square well potential.抄録全体を表示PDF形式でダウンロード (704K) -
Tatsuo Tabata, Kotoyuki Okano1960 年 15 巻 9 号 p. 1552-1555
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありThe gamma-rays from the N14(p, γ)O15 reaction at the Ep=278 kev resonance, corresponding to the 7.56 MeV level in O15, were studied with a large crystal scintillation spectrometer. The direct ground state transition gamma-ray of about 3% in intensity of the total decay was found to exist in addition to the three known cascade lines. Angular distributions of these gamma-rays are all isotropic, supporting the Jπ=\frac12+ assignment to the resonance state. The transition strength (radiation width in units of Weisskopf single particle width) of the direct ground state transition El gamma-ray is calculated to be |M|2=4.15×10−6, which is by a factor of 10−4 smaller than the normal E1 transition strength found in light nuclei. Other transitions in O15 are estimated to be of normal strength compared with Wilkinson’s estimation.抄録全体を表示PDF形式でダウンロード (504K) -
Kotoyuki Okano, Tatsuo Tabata, Kyue Fukuda, Jiro Muto1960 年 15 巻 9 号 p. 1556-1564
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありThe gamma-rays from the Si28(p, γ)P29 reaction at the Ep=369 kev resonance were studied with a large NaI(Tl) crystal scintillation spectrometer. The resonance state, corresponding to the 3.116±0.012 Mev fourth excited state in P29, was found to decay by (74±4)% to the first excited state at 1.384±0.008 Mev and by (26±4)% to the second excited state at 1.961±0.013 Mev which decays predominantly to the ground state.
From the angular distribution measurements of each gamma-ray line, spins and parities of these lower levels in P29 were unambiguously assigned as follows: 1.38 Mev(1st), J=3⁄2+; 1.96 Mev(2nd), J=5⁄2+; 3.12 Mev(4th), J=5⁄2+. These assignments are all consistent with the known character of the corresponding levels in the mirror nucleus Si29, and are also in agreement with the theoretical predictions.
From the precise gamma-ray energy measurements, the Q-value of this reaction was estimated as 2.760±0.013 Mev, which is by about 36 kev larger than the published value based on the β-ray end-point energy measurement. The resonance strength (2J+1)ΓpΓγ⁄(Γp+Γγ) was found to be (4.7±0.8)×10−3 ev.抄録全体を表示PDF形式でダウンロード (1264K) -
Tadashi Kameda, Yoshio Toyoda, Toshio Maeda1960 年 15 巻 9 号 p. 1565-1574
発行日: 1960/09/05
公開日: 2007/05/29
ジャーナル 認証ありUsing two multiplate cloud chambers and five density detectors consisting of 250 G.M.-counter hodoscopes, characters of the electronic component of extensive air showers were investigated for various distances from the axis in the range r≤10 m at 2770 m altitude. The size N of the selected showers extended from 1×105 to 2×106.
The following results were obtained:
(1) The integral size spectrum can be represented by a power law of the form N−γ, where the value of γ varies from 1.5 to 2.0 as the size increases.
(2) The lateral density distribution of the high-energy electronic component with the energy E≥1 Bev fits well to that of the pure electronic shower with the age parameter s=1.4.
(3) The ratio of the density of high-energy electrons and photons to that of all electrons is independent of the atmospheric depth.
(4) The integral energy spectrum can be expressed by the E−n within the energy region 250 Mev ≤E≤1 Bev, and the value of n shifts from 0.7 to 1.2 with increasing r.
(5) The lateral distribution of the energy flux carried by the electronic component is expressed by the form r−(1·57±0·24).
(6) The showers having steeper lateral distribution of electrons than the average one near the axis contain more high-energy rays.
(7) The averge zenith angle distribution is represented by the form cos6·7±1·4θ, however that of showers containing more high-energy rays by the form cos10·0±2·0θ.抄録全体を表示PDF形式でダウンロード (1352K) -
S. S. Mitra, S. K. Joshi1960 年 15 巻 9 号 p. 1575-1576
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証あり“Using an inverse power type repulsive potential two different expressions for the lattice frequency of ionic crystals are obtained, one in terms of the cohesive energy and the other in terms of the compressibility of the crystal.”抄録全体を表示PDF形式でダウンロード (204K) -
Shigeo Yamaguchi1960 年 15 巻 9 号 p. 1577-1585
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありThe spectral transmission from 200 mμ to 1,200 mμ of silver and gold thin films was measured. It was found that for heated silver films a strong resonance type absorption appeared with the peak at 435 mμ∼480 mμ and then the absorption due to electrons in the conduction band disappeared. For heated gold films, the similar results were also obtained but the absorption strength was rather weak and the peak position shifted to 510 mμ∼550 mμ.
By taking into account the two dimensional aggregations, some discussions were made from the view point of the collective motion of conduction electrons within small metallic particles of which the film was composed.抄録全体を表示PDF形式でダウンロード (1100K) -
Shin-ya Miyatani1960 年 15 巻 9 号 p. 1586-1595
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありThe electrical properties such as the electronic and ionic conductivities, Hall coefficients, etc. of the alloys Ag2 (Te, Se; Te, S; Se, S) are studied with use of the galvanic cell Ag|AgI|specimen|Pt, the excess Ag content being controlled by sending a current across the cell. The electrical properties of these alloy systems change continuously in the α phase as the missing ration x in varied, while they change discontinuously or rapidly at certain x’s in the β phase. The experimental results are compared with theory under simplifying assumptions such as the energy-independent relaxation time and the energy-momentum relation given by ε=h2k2(1−Bk2)⁄2m*.抄録全体を表示PDF形式でダウンロード (1556K) -
Tsuruji Iwai1960 年 15 巻 9 号 p. 1596-1600
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありThe optical absorption edge of WO3 single crystal has been measured with polarized light over the temperature range from −100°C to 900°C. From 0°C to about 700°C, the absorption edge shifts linearly toward red with increasing temperature, the temperature coefficients being −9.0×10−4 ev/deg for the case of light polarized in the direction parallel to the a-axis(a-polarized light) and −6.5×10−4 ev/deg for the case of light polarized in the direction parallel to the c-axis(c-polarized light), respectively.
In the vicinity of −50°C, an anomalous shift of the absorption edge takes place. This is attributed to the phase transition. In the low temperature phase, the extinction position is different from that in the high temperature phase. In addition, when the temperature is raised through 740°C, a sudden red shift takes place for the case of a-polarized light, the magnitude being about 0.35 ev, while no anomaly occurs for c-polarized light.抄録全体を表示PDF形式でダウンロード (1004K) -
Tosiyuki Ninomiya1960 年 15 巻 9 号 p. 1601-1606
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありMeasurements are made on the dc conductivity and dielectric loss in quenched KCl crystals doped with small amount of CaCl2. The evidence for formation of higher complexes is obtained from the decay of the conductivity during annealing after quenching. It is also found that there exists a relation between the number of free vacancies, nv, and that of impurity-vacancy associated pairs, np, during the decay at a fixed temperature,
np=K′nv1.92.
The number of the free vacancies is found to decay exponentially with time. The activation energy for the decay is estimated to be 0.63±0.1 eV.抄録全体を表示PDF形式でダウンロード (768K) -
Satio Takagi, Fuminori Fujimoto1960 年 15 巻 9 号 p. 1607-1614
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありA method of measuring the intensity of electron in electron diffraction patterns by the electron-bombardment-induced-current (EBIC) in a CdS single crystal is described. The CdS detector is moved in the diffraction camera by a screw which is driven by a synchronous motor. EBIC is measured directly by a automatic recording millivoltmeter. EBIC properties of good crystals selected from those prepared by Frerichs’ method are given. It is shown that the intensity can be measured within 2–3% error, if suitable precautions are made. An example of the measurement on TlCl is also given.抄録全体を表示PDF形式でダウンロード (1284K) -
Yoshihiko Mizushima1960 年 15 巻 9 号 p. 1614-1631
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありAdsorption of hydrogen on nickel film was measured, which was evaporated under an ultra-high vacuum condition. The relation between the adsorption and the change of electrical resistance of the film was closely studied to find apparently complicated results, which were very different from those of the previous reports. The effect of film thickness, measuring temperature and annealing temperature were separately examined. Adsorption kinetics were also regarded. From the experimental facts it was concluded that the adsorbed species were: (1) negatively charged atom, (2) positively charged atom and (3) molecule. The charge is, however, relatively small. An explanation for the resistance change was suggested.抄録全体を表示PDF形式でダウンロード (2236K) -
Kiyosi O-ohata1960 年 15 巻 9 号 p. 1632-1637
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありIt has been shown in the previous report that the bond orbital method gives the total energy of the molecule as the expanded power series of the overlap integrals between the bond orbitals. It is here shown that the contribution of the third order terms of these overlap integrals, which are neglected hitherto, to the binding energy of the σ bond is by no means negligible though smaller than that of the second order terms. In the case where the third order terms are taken into account, the validity of the additivity rule of the binding energies of the saturated hydrocarbons is discussed.抄録全体を表示PDF形式でダウンロード (852K) -
Tsugio Mori1960 年 15 巻 9 号 p. 1638-1645
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありIn the preceding paper fundamental formulas for ⟨μ2⟩0, ⟨R2⟩0, ⟨μ2⟩ and ⟨R2⟩ are derived. In the present paper, these formulas are brought into the more convenient forms for numerical calculations, and the square well potential of internal rotation of polymer and a linear function \varphi′(\varphi) are introduced. The results of calculations explain that ⟨μ2⟩⁄nμ02 must be 0.3∼1.0 when effective bond length is 5∼10 Å. These values agree satisfactory with experimental data.抄録全体を表示PDF形式でダウンロード (564K) -
Hanako Kobayashi, Taiichiro Haseda, Eizo Kanda, Masayasu Mori1960 年 15 巻 9 号 p. 1646-1651
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありThe investigation of the magnetic properties of chromium bi-nuclear complex compounds was made. The results of the magnetic susceptibility measurements were analyzed on the assumption that their magnetic behaviours are determined mainly by the superexchange interaction between two Cr+3 ions in the same complex unit. The coefficient of the superexchange interaction J was estimated to be about −30 k in the cases of [(NH3)5Cr–OH–Cr(NH3)5]+5 and [(NH3)5Cr–OH–Cr(NH3)4OH]+4 complex ions. In the case of [(NH3)5Cr–O–Cr(NH3)5]+4, the susceptibility is very small below room temperature, hence a large absolute value of J is required to account for the experimental result. The susceptibility of [Cr(NH3)5Cl]Cl2 which is a usual mononuclear complex salt, was measured for the sake of comparison with the above mentioned bi-nuclear complex salts. The susceptibility obeys in this case the Curie-Weiss law in the range between 2.5°K and room temperature. The Weiss constant Θ is −0.8°K±0.1°K and the Curie constant C is 1.82. The X-ray powder patterns of these complexes were taken and examined in comparison with the magnetic properties.抄録全体を表示PDF形式でダウンロード (764K) -
Masahumi Sasaki, Takao Kawai, Akira Hirai, Tsuneo Hashi, Akira Odajima1960 年 15 巻 9 号 p. 1652-1657
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありThe state of sorbed water on cellulose has been studied by pulsed NMR technique. From the experimental results of spin-lattice relaxation time (T1) and spin-spin relaxation time (T2), observed as a spin echo decay time, following conclusions have been derived. (1) Two phases of the sorbed water are classified; the localized and the mobile. (2) The correlation time (τN) derived from T1 using BPP theory, is consistent with that (τD) derived from dielectric measurements. (3) T1 is by one or two order longer than T2 in contradiction to BPP theory for extremely narrowing case. As an explanation for this fact, we propose that, when we consider about T2, the effects of magnetic nuclei contained in the absorbent must be taken into account, though no theory is given. (4) The average life-time of water molecule sorbed on cellulose in the localized state is estimated to be several hundredths of a second and to decrease with temperature.抄録全体を表示PDF形式でダウンロード (756K) -
Takeshi Satoh, Koreaki Hayashi1960 年 15 巻 9 号 p. 1658-1663
発行日: 1960/09/05
公開日: 2007/05/29
ジャーナル 認証ありMolecular refraction of 1–1 electrolyte aqueous solution was reexamined in the light of a proposed model. So-called Lorentz-Lorenz function was plotted against molar fraction of electrolyte. Linear relationships and critical phenomenon dividing the whole range into two were found. By applying our theory we obtain total number of hydration, nI(+)+nI(−)+nII(+)+nII(−), where the hydration numbers around each cation and anion are defined as nI(+), nI(−) referred to the primary region and nII(+), nII(−) referred to the secondary region respectively. We could also estimate the polarizability α* of water molecule which are considered as ‘solvent in concentrated range’ and subjected to the sufficient effect of polarization from surrounding ions.抄録全体を表示PDF形式でダウンロード (612K) -
Ichiro Tsubokawa1960 年 15 巻 9 号 p. 1664-1668
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありMagnetic properties of single crystals of CrBr3 have been measured with a magnetic balance and also with a torque magnetometer. The ferromagnetic Curie point has been found to be 37°K from the temperature dependences of magnetization and of torque. Based on the data of the magnetic susceptibility above the Curie point, the paramagnetic Curie point θp, Curie constant CM and the effective Bohr magneton number have been determined to be 47°K, 1.84 and 3.85 μB respectively. From the saturation magnetization at 42°K, the moment of chromium ion is estimated to be 3 μB, coinciding with the spin moment obtained from the susceptibility measurement above the Curie temperature. Direction of easy magnetization lies along the c-axis of the hexagonal lattice, and the second order and the fourth order anisotropy constants are estimated to be K1=−5.08×105 and K2=0.65×105 erg/cc respectively. In the present results, there is found a small deviation in the torque curves from simple sinusoidal form, L=Ksin2θ, which is discussed on the basis of the higher order term of magnetic anisotropy in the high field strength range and also of the domain-theoretical consideration in the low field strength range.抄録全体を表示PDF形式でダウンロード (556K) -
Tatsuo Yajima, Koichi Shimoda1960 年 15 巻 9 号 p. 1668-1675
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありA method of microwave spectroscopy using three-level maser action is described, and some preliminary experiment on HDCO is given. A b–type transition, 303←212, which is connected with a a-type transition 211←212, has been definitely assigned by the observation of three-level master action. Moreover, the weak transition, 303←212, was observed with very good signal to noise ratio by using the strong transition, 211←212, as a detecting transition. Theories of the three-level maser action in gases are also compared with experiment and shown to be in good agreement. Further applications of the three-level gas maser as a spectrometer as well as an amplifier are discussed.抄録全体を表示PDF形式でダウンロード (1016K) -
Tomizo Itoh, Toshimitsu Musha1960 年 15 巻 9 号 p. 1675-1680
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありMonte Carlo calculations are performed with an electronic computor to investigate the behavior of electrons in helium gas in a uniform electric field. The ionization and excitation coefficients and the drift velocities of electrons in helium for E⁄p0=40, 80 and 160 v/cm/mmHg are obtained. The velocity distributions of electrons are also calculated.抄録全体を表示PDF形式でダウンロード (652K) -
Masateru Sonoda, Akira Katase, Masao Seki, Yoshihisa Wakuta1960 年 15 巻 9 号 p. 1680-1684
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありThe recurrence formulae for the cardinal elements of a multistage accelerator tube are derived. The calculated results for an equidiameter cylinder lens obtained by the consecutive applications of the formulae are not so different from those obtained by assuming a uniform acceleration and still show the appreciable deviations from the experimental data. The errors would, therefore, become large, unless the experimental values are used for the cardinal elements of an individual accelerating lens on which the calculation for multistage accelerator tube is based. As an example, the cardinal elements for a 12-stage accelerator tube is shown The comparison with those obtained by the assumption of a uniform acceleration shows that the latter results are not satisfactorily accurate for such a multistage accelerator.抄録全体を表示PDF形式でダウンロード (484K) -
Shobu Kaneko1960 年 15 巻 9 号 p. 1685-1696
発行日: 1960/09/05
公開日: 2007/06/01
ジャーナル 認証ありThe electric and the thermal conductivities, and the coefficient of the thermal diffusion of plasmas in a magnetic field are calculated under the assumption that the mass ratio m2⁄m1 is considerably smaller than unity, where m1 and m2 are masses of an ion and an electron, respectively. Thereby the terms of the order (m2⁄m1)\frac12 are retained considering the application to the deuterium plasma, but the higher order terms than those are neglected. For various strengths of the magnetic field, these coefficients are evaluated by the Chapman-Enskog method up to the 6th approximation, and the convergence of this method is examined. The probable error of our approximation varies from 0.1% to 10% with the strength of the magnetic field.抄録全体を表示PDF形式でダウンロード (928K) -
Ry\={o}ji Suganuma1960 年 15 巻 9 号 p. 1696
発行日: 1960/09/05
公開日: 2007/05/29
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Saburo Kitamura1960 年 15 巻 9 号 p. 1697
発行日: 1960/09/05
公開日: 2007/05/29
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Shigeru Waku, Kunio Masuno, Toshisuke Tanaka1960 年 15 巻 9 号 p. 1698
発行日: 1960/09/05
公開日: 2007/05/29
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Yoshiro Imaeda1960 年 15 巻 9 号 p. 1699
発行日: 1960/09/05
公開日: 2007/05/29
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Takao Kawai, Masahumi Sasaki, Akira Hirai, Tsuneo Hashi, Akira Odajima1960 年 15 巻 9 号 p. 1700
発行日: 1960/09/05
公開日: 2007/05/29
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Hirosi Tubota, Hiromichi Suzuki, Kazuyoshi Hirakawa1960 年 15 巻 9 号 p. 1701
発行日: 1960/09/05
公開日: 2007/05/29
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Tatsusaburo Suzuki, Jiro Yuhara, Tecchu Majima1960 年 15 巻 9 号 p. 1702
発行日: 1960/09/05
公開日: 2007/05/29
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Eiji Tatsumoto, Kaizo Kuwahara, Mitita Goto1960 年 15 巻 9 号 p. 1703
発行日: 1960/09/05
公開日: 2007/05/29
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Akira Nakamura, Yoshikazu Sugiura1960 年 15 巻 9 号 p. 1704
発行日: 1960/09/05
公開日: 2007/05/29
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Tatsuo Fujiwara, Tetsuo Kato1960 年 15 巻 9 号 p. 1705
発行日: 1960/09/05
公開日: 2007/05/29
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Buichi Kubota1960 年 15 巻 9 号 p. 1706
発行日: 1960/09/05
公開日: 2007/05/29
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Yoshio Ishida1960 年 15 巻 9 号 p. 1707
発行日: 1960/09/05
公開日: 2007/05/29
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Toshimaro Sone, Masayoshi Fukushima, Eiichi Fukada1960 年 15 巻 9 号 p. 1708
発行日: 1960/09/05
公開日: 2007/05/29
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Jun’ichi Okada, Tetsuro Suzuki1960 年 15 巻 9 号 p. 1709
発行日: 1960/09/05
公開日: 2007/05/29
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Kunio Terao1960 年 15 巻 9 号 p. 1710-1711
発行日: 1960/09/05
公開日: 2007/06/01
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Hidetaro Abe, Hiroko Shirai1960 年 15 巻 9 号 p. 1711
発行日: 1960/09/05
公開日: 2007/05/29
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Ko Sugihara1960 年 15 巻 9 号 p. 1712-1713
発行日: 1960/09/05
公開日: 2007/05/29
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Kiichi Komatsubara, Yoshio Inuishi, Hiroshi Edagawa, Tsutomu Shibaike1960 年 15 巻 9 号 p. 1713-1714
発行日: 1960/09/05
公開日: 2007/05/29
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Hiroshi Nosé1960 年 15 巻 9 号 p. 1714-1715
発行日: 1960/09/05
公開日: 2007/05/29
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Eiichi Hirota, Buichi Kubota1960 年 15 巻 9 号 p. 1715
発行日: 1960/09/05
公開日: 2007/05/29
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Noriaki Itoh, Tokuo Suita1960 年 15 巻 9 号 p. 1716-1717
発行日: 1960/09/05
公開日: 2007/05/29
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Yasuo Kanai, Riro Nii, Naozo Watanabe1960 年 15 巻 9 号 p. 1717A
発行日: 1960/09/05
公開日: 2007/05/29
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Hiroo Yonemitsu, Hajime Maeda, Hisao Miyazawa1960 年 15 巻 9 号 p. 1717B-1718
発行日: 1960/09/05
公開日: 2007/05/29
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