@article{oai:teapot.lib.ocha.ac.jp:00029029,
 author = {紹介子},
 issue = {2},
 journal = {幼兒教育},
 month = {Feb},
 note = {application/pdf, 一般雑誌記事},
 pages = {72--77},
 title = {米國加州幼稚園における自由選擇保育の實驗報告},
 volume = {19},
 year = {1919}
}