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 "Bradley, Wilmot Hyde",Origin and microfossils of the oil shale of the Green River formation of Colorado and Utah,,U.S. Govt. Print. Off.,1931,Geological Survey professional paper,,,,https://cir.nii.ac.jp/crid/1130000796040613248