TY  - RPRT
TI  - Correlation of shallow lignite beds in the Denver Formation near Watkins, Colorado, using lithologic and gamma ray logs
AU  - J. D. Sanchez
PY  - 1976
DO  - 10.3133/ofr76279
UR  - https://pubs.usgs.gov/publication/ofr76279
ID  - ofr76279
ER  -