1. Petrography and petrology of volcanic rocks in the Mount Jefferson area, High Cascade Range, Oregon Author/Creator: Greene, Robert C., author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1968 Resource Type: Book Access & Availability: Loading
2. Petrography and petrology of volcanic rocks in the Mount Jefferson area, High Cascade Range, Oregon Author/Creator: Greene, Robert C. Publication/Creation: Washington : U.S. Govt. Print. Off, 1968 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no.1251. Access & Availability: Loading