00801nam a22002171 4500 gs 22000387 DLC 20260227111327.0 790925s1922 dcuaf 00010 eng c gs 22000387 U.S. Geol. survey. Library (200) B no. 130 QE75.P9 no. 130 QE924 .K73 Copy 2. Knowlton, Frank Hall, 1860-1926. The Laramie flora of the Denver basin, with a review of the Laramie problem, by F. H. Knowlton. Washington, Govt. print. off., 1922. iv, 175 p. XXVIII pl., tables. 29 cm. U.S. Geological survey. Professional paper l30 At head of title: Department of the interior. Paleobotany. Geology, Stratigraphic Cretaceous. 26194 26194