TY  - RPRT
TI  - Geologic map of the Jefferson quadrangle, Park and Summit counties, Colorado
AU  - Fred Barker
AU  - Donald Gray Wyant
PY  - 1976
DO  - 10.3133/gq1345
UR  - https://pubs.usgs.gov/publication/gq1345
ID  - gq1345
ER  -