1. Language of the earth Publication/Creation: New York : Pergamon Press, [1981] Resource Type: Book Access & Availability: Loading
2. Late Cenozoic stratigraphic units, northeastern San Joaquin Valley, California Author/Creator: Marchand, Denis E., author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1981 Resource Type: Book Access & Availability: Loading
3. Lexicon of geologic names of the United States for 1968-1975 Author/Creator: Luttrell, Gwendolyn Lewise Werth, 1927- author Publication/Creation: [Reston, Va.] : United States Department of the Interior, Geological Survey, 1981 Resource Type: Book Access & Availability: Loading
4. Lithostratigraphy of the Silurian rocks exposed on the west side of the Cincinnati arch in Kentucky Author/Creator: Peterson, Warren Lee, 1925- author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1981 Resource Type: Book Access & Availability: Loading
5. Lithostratigraphy of the Silurian rocks exposed on the west side of the Cincinnati arch in Kentucky Author/Creator: Peterson, Warren Lee, 1925- Publication/Creation: Alexandria, Va. : For sale by the Distribution Branch, U.S. Geological Survey Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1151 A-G. Access & Availability: Loading