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 "Kerven, Carol",Customary commerce : a historical reassessment of pastoral livestock marketting in Africa,,Overseas Development Institute,1992,ODI agricultural occasional paper,,0850031729,,https://cir.nii.ac.jp/crid/1130282271614290048