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 "Claeson, Claes Fredrik and Egerö, Bertil",Movement to towns : tables and comments,,"Bureau of Resource Assessment and Land Use Planning, University of Dar es Salaam",1971,Research notes,,,,https://cir.nii.ac.jp/crid/1130000796135245824