@article{oai:teapot.lib.ocha.ac.jp:00028557,
 author = {淡路, 圓治郞},
 issue = {11},
 journal = {幼兒教育},
 month = {Nov},
 note = {application/pdf, 一般雑誌記事},
 pages = {382--386},
 title = {兒童の睡眠時間},
 volume = {21},
 year = {1921}
}