@article{oai:repository.dl.itc.u-tokyo.ac.jp:00030075, author = {井上, 健治}, journal = {東京大学教育学部紀要}, month = {Mar}, note = {application/pdf}, pages = {1--30}, title = {子どもの生活時間と遊び(1)}, volume = {13}, year = {1974} }