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 "Hartill, Rufus MacKay",Homogeneous grouping : as a policy in the elementary schools in New York City,,"Bureau of Publications, Teachers College, Columbia University",1936,Contributions to education,,,,https://cir.nii.ac.jp/crid/1130000794000963840