1. 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
2. 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
3. Potential tight gas resources in a frontier province, Jurassic through Tertiary strata beneath the Brooks Range foothills, Arctic Alaska Publication/Creation: [Reston, Va.?] : U.S. Geological Survey, [2006] Resource Type: Map Edition: Version 1.0, posted Aug. 2006. Access & Availability: Loading
4. Principal unconformities in Triassic and Jurassic rocks, western interior United States : a preliminary survey Author/Creator: Pipiringos, G. N. 1918- (George Nicholas), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1978 Resource Type: Book Access & Availability: Loading
5. Principal unconformities in Triassic and Jurassic rocks, western interior United States : a preliminary survey Author/Creator: Pipiringos, G. N. 1918- (George Nicholas) Publication/Creation: Washington : U.S. Govt. Print. Off, 1978 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1033-1039. Access & Availability: Loading