TY  - RPRT
TI  - Map of Colorado showing test wells for oil and gas, pipelines, oil and gas fields, and areas of pre-cambrian rocks
AU  - Flora K. Walker
AU  - N. Wood Bass
PY  - 1951
DO  - 10.3133/om116
UR  - https://pubs.usgs.gov/publication/om116
ID  - om116
ER  -