TY  - RPRT
TI  - Preliminary results of 1978 coal exploratory drilling in the Trinidad-Raton coal region, Las Animas County, Colorado
AU  - Walter Danilchik
PY  - 1978
DO  - 10.3133/ofr781101
UR  - https://pubs.usgs.gov/publication/ofr781101
ID  - ofr781101
ER  -