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 "Ohsawa, Yoshiaki",Errors caused by map projection in the Weber model,,University of Tsukuba,1995,Institute of Socio-Economic Planning discussion paper series,,,,https://cir.nii.ac.jp/crid/1130000797280045568