1. 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
2. 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