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 Educational Research Council of America. Social Science Staff,Area study : lands of Africa,Learner-verified ed. 2,Allyn and Bacon,1977,Concepts and inquiry : the Educational Research Council social science program,,,,https://cir.nii.ac.jp/crid/1130282271709061504