著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL Unesco,"Mental hygiene in the nursery school : report of a joint WHO-Unesco expert meeting held in Paris, 17-22 September 1951",,Unesco,1953,Problems in education,,,,https://cir.nii.ac.jp/crid/1130000794420275712