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 "Bressler, Raymond G. and Hopkins, John A.",Trends in size and production of the aggregate farm enterprise 1909-36,,"Works Progress Administration, National Research Project",1938,Report,,,,https://cir.nii.ac.jp/crid/1130282271241318016