TY  - RPRT
TI  - Map showing outstanding natural and historic landmarks in the Boulder-Fort Collins-Greeley area, Front Range Urban Corridor, Colorado
AU  - B. N. Petrie
PY  - 1975
DO  - 10.3133/i855f
UR  - https://pubs.usgs.gov/publication/i855F
ID  - i855F
ER  -