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 "Gregory, J. W.","The Great Rift Valley : being the narrative of a journey to Mount Kenya and Lake Baringo, with some account of the geology, natural history, anthropology and future prospects of British East Africa","1st ed., new impression",Cass,1968,Cass library of African studies,,,,https://cir.nii.ac.jp/crid/1130282270872177152