TY  - RPRT
TI  - Stratigraphic nomenclature of the Thirtynine Mile volcanic field, central Colorado
AU  - Rudy C. Epis
AU  - Charles Edward Chapin
PY  - 1974
DO  - 10.3133/b1395c
UR  - https://pubs.usgs.gov/publication/b1395C
ID  - b1395C
ER  -