@article{oai:teapot.lib.ocha.ac.jp:00018783, author = {野口, はつ江}, issue = {10}, journal = {幼児の教育}, month = {Oct}, note = {application/pdf, 一般雑誌記事}, pages = {23--28}, title = {幼児集団の発展過程に関する一研究}, volume = {63}, year = {1964} }