TY  - RPRT
TI  - Characterization of Petroleum Residue in the Entrada Sandstone, Colorado National Monument
AU  - Paul G. Lillis
AU  - J. David King
PY  - 2007
DO  - 10.3133/ofr20071360
UR  - https://pubs.usgs.gov/publication/ofr20071360
ID  - ofr20071360
ER  -