TY  - RPRT
TI  - Results of exploration at the Old Leyden coal mine, Jefferson County, Colorado
AU  - A.J. Gude
AU  - F. A. McKeown
PY  - 1953
DO  - 10.3133/ofr5382
UR  - https://pubs.usgs.gov/publication/ofr5382
ID  - ofr5382
ER  -