1. Detailed cross sections of the Eocene Green River formation along the North and East margins of the Piceance Basin, western Colorado, using measured sections and drill hole information Author/Creator: Johnson, Ronald C. 1950- (Ronald Carl), cartographer Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2014 Resource Type: Map Access & Availability: Loading
2. Depositional environments of coal-bearing and associated formations of Cretaceous Age in the National Petroleum Reserve in Alaska Author/Creator: Roehler, Henry W. Publication/Creation: Washington : U.S. G.P.O., 1987 Resource Type: Book Access & Availability: Loading
3. Depositional environments of coal-bearing and associated formations of Cretaceous age in the National Petroleum Reserve in Alaska Author/Creator: Roehler, Henry W., author Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1987 Resource Type: Book Access & Availability: Loading