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Article type: Cover
1991 Volume 17 Pages
Cover1-
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Article type: Appendix
1991 Volume 17 Pages
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Article type: Appendix
1991 Volume 17 Pages
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Article type: Appendix
1991 Volume 17 Pages
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Article type: Appendix
1991 Volume 17 Pages
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Article type: Index
1991 Volume 17 Pages
Toc1-
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Chikio HAYASHI
Article type: Article
1991 Volume 17 Pages
1-7
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Article type: Appendix
1991 Volume 17 Pages
8-
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Ichiro KAIBARA
Article type: Article
1991 Volume 17 Pages
9-23
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Article type: Appendix
1991 Volume 17 Pages
24-
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Takashi MATSUGI
Article type: Article
1991 Volume 17 Pages
25-31
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Article type: Appendix
1991 Volume 17 Pages
32-
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Yasushi KITANO, Yukichi KONOHIRA
Article type: Article
1991 Volume 17 Pages
33-34
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Masaaki IMANAGA
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1991 Volume 17 Pages
35-41
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Article type: Appendix
1991 Volume 17 Pages
42-
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Naoto MATSUMURA
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1991 Volume 17 Pages
43-49
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Article type: Appendix
1991 Volume 17 Pages
50-
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Masahiro AMANO
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1991 Volume 17 Pages
51-60
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Takashi KATO
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1991 Volume 17 Pages
61-66
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Haruo SAWADA
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1991 Volume 17 Pages
67-72
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Yoshihiro NOBORI
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1991 Volume 17 Pages
73-82
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In this report, I considered the relationship between environmental resources of the Earth and forest stands from the data of national parks in U.S.A. The results are summarized as follows. At first, every states have another weather and natural vegitation, because of extensiveness of the U.S.A., so we have to consider the regional factors. The environmental resources includes the geographical factors, forest stands and the vagetation. The national parks are classified such three types. They are the present condition conservation type, transition observation type and anothers. And all types of environmental resources have anather time scales. Each national park have many time scales. At the biginning, the purpose of the national park was only resort resource, but in recent years, the purposes are the studing fields of nature conservation. At now, artificial environmental destructions are grave influences. I think that the future mission of the national park is the information field of environmental destructions.
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Akira OSAWA
Article type: Article
1991 Volume 17 Pages
83-90
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Hirokazu YAMAMOTO
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1991 Volume 17 Pages
91-93
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Article type: Appendix
1991 Volume 17 Pages
94-
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Kiyoshi HONDA
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1991 Volume 17 Pages
95-104
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Haruo SAWADA
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1991 Volume 17 Pages
105-112
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Shunji MURAI
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1991 Volume 17 Pages
113-120
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Takafumi TANAKA, Kiyoto SAKURAI
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1991 Volume 17 Pages
121-132
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Masami KITAMURA
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1991 Volume 17 Pages
133-
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Yukichi KONOHIRA
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1991 Volume 17 Pages
135-136
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Yukichi KONOHIRA
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1991 Volume 17 Pages
137-138
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Kimio TAKEUCHI
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1991 Volume 17 Pages
139-159
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Article type: Appendix
1991 Volume 17 Pages
160-
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1991 Volume 17 Pages
160-
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160-
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160-
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161-162
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1991 Volume 17 Pages
163-164
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165-
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166-
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1991 Volume 17 Pages
167-173
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1991 Volume 17 Pages
174-175
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1991 Volume 17 Pages
176-177
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178-
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179-
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180-181
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1991 Volume 17 Pages
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