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 "Gregersen, H. M. and Food and Agriculture Organization of the United Nations",Guidelines for economic appraisal of watershed management projects,,Food and Agriculture Organization of the United Nations,1987,FAO conservation guide,,925102555X,,https://cir.nii.ac.jp/crid/1130282272149771136