A.H. Koschmann books & textbook
Principal gold-producing districts of the United States, (Geological Survey professional paper 610)
Albert Herbert Koschmann M. H. Bergendahl
U.S. Dept. of the Interior /1968T Hardcover / 283 Pages
Geology and Ore Deposits of the Magdalena Mining District, New Mexico 1942 Professional Paper 200
United States Government Printing Office /1942T Paperback / 168 Pages
PRINCIPAL GOLD-PRODUCING DISTRICTS OF THE UNITED STATES Geological Survey Professional Paper 610
Koschmann, A. H. & Bergendahl, M. H.
Government Printing Office /1968T Paperback
PRINCIPAL GOLD-PRODUCING DISTRICS OF THE UNITED STATES
Koschmann, A. H., M. H. Bergendahi
US Gov Printing Office /1968T Hardcover
Gold in the United States (exclusive of Alaska and Hawaii) (Mineral Investigations Resource Map, MR-24)
US Geological Survey /1962T Map
Principal Gold-Producing Districts of the United States: Geological Survey Profe
Koschmann, A. H. and M. H. Bergendahl
U. S. Government Printing Office /1968T Hardcover
Tin Deposits of Irish Creek, Virginia (Classic Reprint)
Forgotten Books /2024-01-29 Paperback / 40 Pages
isbn-10: 1334481350 / isbn-13: 9781334481352
Principal Gold-Producing Districts of Colorado
Koschmann, A. H. Bergendahl, M. H.
Carson Enterprises / Paperback
isbn-10: 0941620476 / isbn-13: 9780941620475
