1. The Jurassic Wanakah and Morrison formations in the Telluride-Ouray-western Black Canyon area of southern Colorado : revision of the Wanakah Formation and basal Morrison Formation in part of the Black Canyon of the Gunnison River Author/Creator: O'Sullivan, Robert Brett, 1923- Publication/Creation: Washington : U.S. G.P.O. ; Denver, CO : For sale by the Book and Open-File Report Sales, U.S. Geological Survey, 1992 Resource Type: Book Access & Availability: Loading
2. The Jurassic Wanakah and Morrison formations in the Telluride-Ouray-western Black Canyon area of southwestern Colorado Author/Creator: O'Sullivan, Robert Brett, 1923- author Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 1992 Resource Type: Book Access & Availability: Loading