TY  - RPRT
TI  - Paleoenvironmental history of the Rocky Mountain Region during the past 20,000 years
AU  - C. Whitlock
AU  - M.A. Reasoner
AU  - C.H. Key
PY  - 2002
UR  - https://pubs.usgs.gov/publication/70006628
ID  - 70006628
ER  -