11. Zoning of the Bitter Creek vanadium-uranium deposit near Uravan, Colorado Author/Creator: Heyl, Allen V. 1918-2008, (Allen Van), author Publication/Creation: [Washington, D.C.] : [United States Department of the Interior, Geological Survey], [1957] Resource Type: Book Access & Availability: Loading
12. Zoogeography of Holocene Ostracoda off western North America and paleoclimatic implications Author/Creator: Valentine, Page C., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1976 Resource Type: Book Access & Availability: Loading
13. Zuni quadrangle, Virginia : 7.5-minute series Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2010- Resource Type: Map Access & Availability: Loading