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 "Shantz, H. L. (Homer LeRoy)",Natural vegetation as an indicator of the capabilities of land for crop production in the Great Plains area,,Govt. Print. Off.,1911,"U.S. Department of Agriculture, Bureau of Plant Industry bulletin",,,,https://cir.nii.ac.jp/crid/1130282269653148544