1. Transgressive and regressive cretaceous deposits in southern San Juan Basin, N. Mexi Author/Creator: Sears, Julian D. 1891- (Julian Ducker), author Publication/Creation: [Washington] : [United States Department of the Interior, Geological Survey], [1941] Resource Type: Book Access & Availability: Loading
2. Transgressive and regressive cretaceous deposits in southern San Juan Basin, New Mexico Author/Creator: Sears, Julian D. 1891-1970. (Julian Ducker) Publication/Creation: Washington : U.S. Gov't Print. Off, 1941 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 193 A-F. Access & Availability: Loading