标题：506, 507 学力の地域差を規定する諸要因の研究 (日本教育心理学会第4回総会部門別研究発表要旨・討論の概要 : 13. 学習環境と学力) [in Japanese] 506, 507. An analytical study of the factors determining the regional differences in achievement. (TITLE OF PAPERS AND THE SUMMARIES OF DISCUSSIONS : 13. Environmental influences upon achievement) [in Japanese]
