1. Analytical methods used in geochemical exploration, 1984 Author/Creator: O'Leary, Richard M., author Publication/Creation: [Reston, Virginia] : United States Department of the Interior, U.S. Geological Survey, 1986 Resource Type: Book Access & Availability: Loading
2. Analytical methods used in geochemical exploration, 1984 Author/Creator: O'Leary, Richard M. Publication/Creation: [Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey, 1986 Resource Type: Book Access & Availability: Loading