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 "Strickland, Ruth G.",A study of the possibilities of graphs as a means of instruction in the first four grades of the elementary school,,AMS Press,1972,Contributions to education,,0404557457,,https://cir.nii.ac.jp/crid/1130282270679284480