@article{oai:teapot.lib.ocha.ac.jp:00015569, author = {横浜, 恵三子}, issue = {9}, journal = {幼児の教育}, month = {Sep}, note = {application/pdf, 一般雑誌記事}, pages = {35--42}, title = {集団保育の適齢期に関する研究}, volume = {77}, year = {1978} }