TY  - RPRT
TI  - Petroleum systems and assessment of undiscovered oil and gas in the Denver Basin Province, Colorado, Kansas, Nebraska, South Dakota, and Wyoming — USGS Province 39
AU  - Debra K. Higley
PY  - 2007
DO  - 10.3133/ds69p
UR  - https://pubs.usgs.gov/publication/ds69P
ID  - ds69P
ER  -