TY  - RPRT
TI  - Geologic map of the Trinchera Ranch quadrangle, Costilla County, Colorado
AU  - Alan R. Wallace
PY  - 1996
DO  - 10.3133/mf2312c
UR  - https://pubs.usgs.gov/publication/mf2312C
ID  - mf2312C
ER  -