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 "久馬, 一剛 and 川口, 桂三郎",Fertility evaluation of paddy soils in south and southeast Asia : second approximation : evaluation of three independent constituents of soil fertility,,"Center for Southeast Asian Studies, Kyoto University]",1972,Discussion paper,,,,https://cir.nii.ac.jp/crid/1130000797138244864