TY  - RPRT
TI  - Chemical analysis, physical property tests, and lithologic description of cores and cuttings of lignite and overburden rocks from an area near Watkins, Colorado
AU  - J. D. Sanchez
AU  - Robert G. Hobbs
PY  - 1977
DO  - 10.3133/ofr77628
UR  - https://pubs.usgs.gov/publication/ofr77628
ID  - ofr77628
ER  -