1. Structural context of mid-Tertiary mineralization in the Mammoth and San Manuel districts, southeastern Arizona Author/Creator: Force, Eric R. Publication/Creation: [Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey, 1992 Resource Type: Book Access & Availability: Loading
2. Manganese contents of some sedimentary rocks of Paleozoic Age in Virginia Author/Creator: Force, Eric R., author Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Book Access & Availability: Loading