TY  - RPRT
TI  - Contributions to economic geology, 1920, Part II, Mineral fuels--The Lance Creek oil and gas field, Niobrara County, Wyoming
AU  - E.T. Hancock
PY  - 1921
DO  - 10.3133/b716e
UR  - https://pubs.usgs.gov/publication/b716E
ID  - b716E
ER  -