TY - BOOK AU - Bove,Dana J. AU - Bove, Dana J. ED - U.S. Geological Survey TI - Geochronology and geology of late oligocene through miocene volcanism and mineralization in the San Juan Mountains, Colorado SN - 0607974869 PY - 2001/// CY - Denver PB - U.S. Geological Survey N1 - Refreces: 17-19 ER -