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
"Keefer, David K. and Johnson, Arvid M.","Earth flows : morphology, mobilization, and movement : a study of the factors controlling earth-flow occurrence and the velocity of an active earth flow",,U.S. G.P.O.,1983,Geological Survey professional paper,,,,https://cir.nii.ac.jp/crid/1130282270526694528