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 National Academy of Sciences,Summary report 1973 doctorate recipients from United States universities,,"Prepared by ERIC Document Reproduction Service, operated by Leasco Information Products",,ERIC reports,,,,https://cir.nii.ac.jp/crid/1130000797069612800