TY  - RPRT
TI  - Surficial geology of the northern San Luis Valley, Saguache, Fremont, Custer, Alamosa, Rio Grande, Conejos, and Costilla Counties, Colorado
AU  - Chester A. Ruleman
AU  - Theodore R. Brandt
PY  - 2021
DO  - 10.3133/sim3475
UR  - https://pubs.usgs.gov/publication/sim3475
ID  - sim3475
ER  -