1. Fossil plants from the Colgate member of the Fox Hills sandstone and adjacent strata Author/Creator: Brown, Roland W. 1893-1961. (Roland Wilbur) Publication/Creation: Washington : Govt. Print. Off, 1939 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 189 A-I. Access & Availability: Loading
2. Fossil plants from the Colgate member of the Fox Hills sandstone and adjacent strata Author/Creator: Brown, Roland W. 1893-1961, (Roland Wilbur), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1939 Resource Type: Book Access & Availability: Loading