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 "Von Braun, Joachim and Haen, Hartwig de and Blanken, Juergen","Commercialization of agriculture under population pressure : effects on production, consumption, and nutrition in Rwanda",,International Food Policy Research Institute,1991,Research report,,0896290875,,https://cir.nii.ac.jp/crid/1130282271749376000