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. Dept. of Agriculture,"Farm production, farm disposition, and value of principal field crops ; revised estimates, 1944-49",,U.S. G.P.O.,1952,Statistical bulletin,,,,https://cir.nii.ac.jp/crid/1130282269622736640