TY - BOOK AU - Sharp,William N. AU - Gualtieri,James Louis TI - Lead, copper, molybdenum, and zinc geochemical anomalies south of the Summitville District,: Rio Grande County, Colorado, T2 - Geological survey circular 557 AV - QE75 .C5 vol. 557 U1 - 553/.4 PY - 1968/// CY - Washington KW - Lead ores KW - Colorado KW - Rio Grande County KW - Mines and mineral resources N1 - Bibliography: p. 2 ER -