Provider: Japan Science and Technology Agency Database: J-STAGE Content:text/plain; charset="utf-8" TY - JOUR TI - Brief Reports TI - AU - Yokochi,Kiyoshi JO - Japan Journal of Mathematics Education and Related Fields VL - 25 IS - 1-2 SP - 94 EP - 95 PY - 1984 DO - 10.34323/mesj.25.1-2_94 ER -