Kerr, Paul F. Tungsten mineralization in the United States - New York Geological Society of America 1958 - 241 p. ilus., maps. - Geological Society of America. Memoir n.15 . Subjects--Topical Terms: MINERALIZACIONTUNGSTENOYACIMIENTOS MINERALES Subjects--Geographic Terms: ESTADOS UNIDOS Universal Decimal Class. No.: 553.463(73)/K45