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 "Cummings, Ralph Waldo",The organic-matter content of New York orchard soils in relation to orchard performance,,Cornell University Agricultural Experiment Station,1937,Bulletin,,,,https://cir.nii.ac.jp/crid/1130282268705578112