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 "Thapa, Gopal B. and Weber, Karl E. and Asian Institute of Technology. Division of Human Settlements Development","Soil erosion in developing countries : causes, policies and programs",,"Division of Human Settlements Development, Asian Institute of Technology",1991,Studies in regional environmental planning,,9748201643,,https://cir.nii.ac.jp/crid/1130007734929570824