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 "Okoye, Felix Chuks",International law and the new African states,,Sweet and Maxwell,1972,Law in Africa,,"042116140X,0421174404",,https://cir.nii.ac.jp/crid/1130282269105811328