@article{oai:teapot.lib.ocha.ac.jp:00020015, author = {坂元, 彦太郎}, issue = {12}, journal = {幼児の教育}, month = {Dec}, note = {application/pdf, 一般雑誌記事}, pages = {2--8}, title = {自由遊びの意義と実際}, volume = {58}, year = {1959} }