TY  - RPRT
TI  - Geochemical evidence for Paleozoic oil in Lower Cretaceous O Sandstone, northern Denver basin
AU  - J.L. Clayton
PY  - 1989
DO  - 10.1306/44b4a2c6-170a-11d7-8645000102c1865d
UR  - https://pubs.usgs.gov/publication/70016032
ID  - 70016032
ER  -