Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
United States. Agricultural Research Service. Production Economics Research Branch and United States. Dept. of Agriculture,"Agricultural land resources in the United States, with special reference to present and potential cropland and pasture",,U.S. Dept. of Agriculture,1955,Agriculture information bulletin,,,,https://cir.nii.ac.jp/crid/1130282269226163456