Reno, NV: Mackay School of Mines, 1977. yellow wraps, 11" x 8", 24 pages, library stamp on cover, illustrated, some underlining. from the abstract, "Twenty-eight species of trace fossils from Nevada are described in this paper." More
Washington, D. C. U. S. Bureau of Mines, 1977. stapled binding, covers clean, pages clean, 43 pages, 11" tall. The Bureau of Mines and El Paso Mining and Milling Co. conducted a cooperative in situ leaching research program at the Emerald Isle mine near Kingman, Ariz. DR2. More
ONTARIO, CA: Shattinger Publications, 1960. Softcover. Very Good 4to-over 9¾"-12" tall. Blue stock cover, black lettering, 48 pgs., minor scuffing to cover, interior clean. More