1. Intrusive rocks northeast of Steamboat Springs, Park Range, Colorado Author/Creator: Snyder, George L. 1927- (George Leonard), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1978 Resource Type: Book Access & Availability: Loading
2. Introduction to correlation of Precambrian rock sequences Author/Creator: Harrison, Jack Edward, 1924- author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1984 Resource Type: Book Access & Availability: Loading