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 "Eltis, David and Richardson, David","Routes to slavery : direction, ethnicity and mortality in the transatlantic slave trade",,Frank Cass,1997,Studies in slave and post-slave societies and cultures,,"0714648205,0714643904",,https://cir.nii.ac.jp/crid/1130000793948049664