Hobson, George Douglas A shallow seismic survey, elastic constants studies and surficial geology of part of defence research establishment suffield (DRES), SUffield, Alberta - Ottawa : Dept. of Energy, Mines and Resources, 1970. - vi,24p. : ill. ; 25cm. - Paper; 69-13 . Includes bibliographical references Subjects--Topical Terms: SeismologyAlbertaSuffied LC Class. No.: PAM QE185.A42 no.69-13