1. Petrology of the Morrison Formation in the Colorado Plateau region Author/Creator: Cadigan, Robert Allen, 1918- author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1967 Resource Type: Book Access & Availability: Loading
2. Petrology of the Morrison Formation in the Colorado Plateau region, Author/Creator: Cadigan, Robert Allen, 1918- Publication/Creation: Washington : U.S. Govt. Print. Off, 1967 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 555-558. Access & Availability: Loading