TY  - RPRT
TI  - Preliminary geologic map of the Segar Mountain Quadrangle, Rio Blanco County, Colorado
AU  - R. B. O'Sullivan
PY  - 1974
DO  - 10.3133/mf570
UR  - https://pubs.usgs.gov/publication/mf570
ID  - mf570
ER  -