B-53 Clastic Dikes Intruding Cretaceous Coals of Western Colorado B-53 Clastic Dikes Intruding Cretaceous Coals of Western Colorado
IS-50 Oil and Gas Fields of Colorado Statistical Summary through 1996 IS-50 Oil and Gas Fields of Colorado Statistical Summary through 1996
IS-52 Colorado Mineral and Mineral Fuel Activity IS-52 Colorado Mineral and Mineral Fuel Activity, 1998
IS-53 Snow and Avalanche: Colorado Avalanche Information Center Annual Report 1998-1999 IS-53 Snow and Avalanche: Colorado Avalanche Information Center Annual Report 1998-1999
RS-37 Geology and Mineral Resources of Gunnison County RS-37 Geology and Mineral Resources of Gunnison County, Colorado
OF-99-03 Geologic Map of the Gribbles Park Quadrangle OF-99-03 Geologic Map of the Gribbles Park Quadrangle, Park and Fremont Counties, Colorado
OF-99-04 Geologic Map of the Durango West Quadrangle OF-99-04 Geologic Map of the Durango West Quadrangle, La Plata County, Colorado
OF-99-05 Geologic Map of the Hunter Mesa Quadrangle OF-99-05 Geologic Map of the Hunter Mesa Quadrangle, Garfield County, Colorado
OF-99-06 Geologic Map of the Durango East Quadrangle OF-99-06 Geologic Map of the Durango East Quadrangle, La Plata County, Colorado