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
"Chandler, Val W. and Schaap, Bryan D. and Minnesota Geological Survey",Bouguer gravity anomaly map of Minnesota,,"Minnesota Geological Survey, University of Minnesota",1991,State map series,,,,https://cir.nii.ac.jp/crid/1130000797738051072