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 "Norman, D. W.",The feasibility of improved sole crop sorghum production technology for the small-scale farmer in the northern Guinea savanna zone of Nigeria,,"Institute for Agricultural Research, Ahmadu Bello University",1976,Samaru miscellaneous paper,,,,https://cir.nii.ac.jp/crid/1130282270535771904