@article{oai:teapot.lib.ocha.ac.jp:00019126, author = {勝井, 晃}, issue = {4}, journal = {幼児の教育}, month = {Apr}, note = {application/pdf, 一般雑誌記事}, pages = {26--31}, title = {生れ月と幼児の発達の個人差}, volume = {62}, year = {1963} }