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 "Henderson, P.A. and Singh, Ramesh and Overseas Development Institute (London, England). Agricultural Administration Unit",Non-government links in seed production k: case studies from the gambia and Ethiopia,,In-house reproduction),1990,Network paper,,,,https://cir.nii.ac.jp/crid/1130282271935508352