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 "Gupta, Tirath R. and Mohan, Deepinder",Economics of trees versus annual crops on marginal agricultural lands,,Oxford & IBH Pub. Co.,1982,CMA monograph,,,,https://cir.nii.ac.jp/crid/1130000793980763392