@article{oai:teapot.lib.ocha.ac.jp:00017090, author = {石川, 信一}, issue = {7}, journal = {幼児の教育}, month = {Jul}, note = {application/pdf, 一般雑誌記事}, pages = {44--49}, title = {遊びの心理学(二)}, volume = {71}, year = {1972} }