TY  - RPRT
TI  - Geologic and coal outcrop map of the Madrid quadrangle, Las Animas, Colorado
AU  - Walter Danilchik
PY  - 1979
DO  - 10.3133/ofr79377
UR  - https://pubs.usgs.gov/publication/ofr79377
ID  - ofr79377
ER  -