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
"Ross, Clarence Samuel","Occurrence and origin of the titanium deposits of Nelson and Amherst counties, Virginia",,U. S. Govt. print. off,1941,Geological Survey professional paper,,,,https://cir.nii.ac.jp/crid/1130282270868835968