TY  - RPRT
TI  - Preliminary geologic map of the Howardsville 7.5-minute quadrangle, San Juan and Hinsdale counties, Colorado
AU  - R. G. Luedke
AU  - W. S. Burbank
PY  - 1996
DO  - 10.3133/ofr96278
UR  - https://pubs.usgs.gov/publication/ofr96278
ID  - ofr96278
ER  -