2002 USGS assessment of oil and gas resource potential of the Denver Basin Province of Colorado, Kansas, Nebraska, South Dakota, and Wyoming [electronic resource].
Imprint
[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2003]
Two thousand two United States Geological Survey assessment of oil and gas resource potential of the Denver Basin Province of Colorado, Kansas, Nebraska, South Dakota, and Wyoming