@article{oai:teapot.lib.ocha.ac.jp:00018235, author = {黒田, 成子}, issue = {3}, journal = {幼児の教育}, month = {Mar}, note = {application/pdf, 一般雑誌記事}, pages = {20--23}, title = {一クラスの人数は何人が適当か (幼稚園)}, volume = {66}, year = {1967} }