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 "O'Connor, Jim E. and Oregon. Water Resources Department and Geological Survey (U.S.)","Origin, extent, and thickness of Quaternary geologic units in the Willamette Valley, Oregon",,U.S. Geological Survey,2001,Geological Survey professional paper,,0607948329,,https://cir.nii.ac.jp/crid/1130000793747084544