TY  - RPRT
TI  - Geologic map of the Hygiene quadrangle, Boulder County, Colorado
AU  - Richard F. Madole
AU  - William A. Braddock
AU  - Roger B. Colton
PY  - 1998
DO  - 10.3133/gq1772
UR  - https://pubs.usgs.gov/publication/gq1772
ID  - gq1772
ER  -