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 "Morey, G. B. and Minnesota Geological Survey","Geologic map of the Lake Superior region : Minnesota, Wisconsin, and Northern Michigan",,"Minnesota Geological Survey, University of Minnesota",1982,State map series,,,,https://cir.nii.ac.jp/crid/1130282271291453696