1. The Chinle (Upper Triassic) and Sundance (Upper Jurassic) Formations in north-central Colorado Author/Creator: Pipiringos, G. N. 1918- (George Nicholas) Publication/Creation: Washington : U.S. Govt. Print. Off, 1969 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1274. Access & Availability: Loading
2. The Chinle (Upper Triassic) and Sundance (Upper Jurassic) Formations in north-central Colorado : a description of hitherto unreported or little-understood stratigraphic and paleontologic details of marine Jurassic and Upper Triassic rocks of a scantily studied area Author/Creator: Pipiringos, G. N. 1918- (George Nicholas), author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969 Resource Type: Book Access & Availability: Loading
3. Correlation and nomenclature of some Triassic and Jurassic rocks in south-central Wyoming, Author/Creator: Pipiringos, G. N. 1918- (George Nicholas) Publication/Creation: Washington : U.S. Govt. Print. Off, 1968 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 594 A-M. Access & Availability: Loading
4. Lithology and subdivisions of the Jurassic stump formation in southeastern Idaho and adjoining areas Author/Creator: Pipiringos, G. N. 1918- (George Nicholas) Publication/Creation: Washington : U.S. Govt. Print. Off, 1979 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1033-1039. Access & Availability: Loading
5. Lithology and subdivisions of the Jurassic stump formation in southeastern Idaho and adjoining areas Author/Creator: Pipiringos, G. N. 1918- (George Nicholas), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1979 Resource Type: Book Access & Availability: Loading
6. 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
7. 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
8. Stratigraphic relations of the Navajo Sandstone to Middle Jurassic formations, southern Utah and northern Arizona Author/Creator: Peterson, Fred, 1933- author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1979 Resource Type: Book Access & Availability: Loading