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
"United States. Work Projects Administration. National Research Project and Spencer, Vivian Eberle","Production, employment and productivity in the mineral extractive industries, 1880-1938",,"Work Projects Administration, National Research Project",1940,Report,,,,https://cir.nii.ac.jp/crid/1130000797674423296