1. ⁴⁰Ar/³⁹Ar ages of some Challis Volcanic Group rocks and the initiation of Tertiary sedimentary basins in southwestern Montana Author/Creator: M'Gonigle, John W. Publication/Creation: Denver, CO : For sale by the U.S. Geological Survey, Information Services Format: Book Access & Availability: Loading
2. ⁴⁰Ar/³⁹Ar and K-Ar geochronology and tectonic significance of the Upper Cretaceous Adel Mountain volcanics and spatially associated Tertiary igneous rocks, northwestern Montana Publication/Creation: Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2005 Format: Book Access & Availability: Loading
3. Abandonment of the name Hartford Hill rhyolite tuff and adoption of new formation names for middle Tertiary ash-flow tuffs in the Carson City - Silver City area, Nevada Author/Creator: Bingler, Edward C. Publication/Creation: Washington : U.S. Govt. Print. Off., 1978 Format: Book Is Part Of: U.S. Geological Survey bulletin, no. 1457. Access & Availability: Loading
4. Abandonment of the name Hartford Hill rhyolite tuff and adoption of new formation names for middle Tertiary ash-flow tuffs in the Carson City - Silver City area, Nevada Author/Creator: Bingler, Edward C., author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1978 Format: Book Access & Availability: Loading
5. Abriss der Geologie Author/Creator: Kayser, Emanuel, 1845-1927 Publication/Creation: Stuttgard : F. Enke, 1948-1950 Format: Book Access & Availability: Loading
6. The Accotink schist, Lake Barcroft metasandstone, and Popes Head Formation--keys to an understanding of the tectonic evolution of the northern Virginia Piedmont Author/Creator: Drake, Avery Ala, 1927- Publication/Creation: For sale by the Branch of Distribution, U.S. Geological Survey Format: Book Access & Availability: Loading
7. The Accotink schist, Lake Barcroft metasandstone, and Popes Head Formation--keys to an understanding of the tectonic evolution of the northern Virginia Piedmont Author/Creator: Drake, Avery Ala, 1927- author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1981 Format: Book Access & Availability: Loading
8. Additions to the flora of the Wilcox group Author/Creator: Berry, Edward Wilber, 1875-1945, author Publication/Creation: [Washington] : [Department of the Interior, United States Geological Survey], [1923] Format: Book Access & Availability: Loading
9. After a century : revised Paleogene coal stratigraphy, correlation, and deposition, Powder River Basin, Wyoming and Montana Publication/Creation: Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2010 Format: Book Access & Availability: Loading
10. After the Australopithecines : stratigraphy, ecology, and culture change in the Middle Pleistocene Publication/Creation: Chicago : Distributed in the USA and Canada by Aldine Format: Book Access & Availability: Loading