Revised teriary stratigraphy and paleontology of the Western beaver devide, Frem
Emry, R.J.
Revised teriary stratigraphy and paleontology of the Western beaver devide, Frem - Washington 1975 - 20 p. - No. 25; Smithsonian Contributi .
Revised teriary stratigraphy and paleontology of the Western beaver devide, Frem - Washington 1975 - 20 p. - No. 25; Smithsonian Contributi .