TY  - RPRT
TI  - Geologic map of the Silverton and Howardsville quadrangles, southwestern Colorado
AU  - R. G. Luedke
AU  - W. S. Burbank
PY  - 2000
DO  - 10.3133/i2681
UR  - https://pubs.usgs.gov/publication/i2681
ID  - i2681
ER  -