TY  - RPRT
TI  - Preliminary geologic map of the Howardsville Quadrangle, Colorado
AU  - Robert G. Luedke
AU  - Wilbur S. Burbank
PY  - 1975
DO  - 10.3133/ofr75432
UR  - https://pubs.usgs.gov/publication/ofr75432
ID  - ofr75432
ER  -