TY  - RPRT
TI  - Bristlecone pine frost-ring and light-ring chronologies, from 569 B.C. to A.D. 1993, Colorado
AU  - F. Craig Brunstein
PY  - 1995
DO  - 10.3133/ofr9563
UR  - https://pubs.usgs.gov/publication/ofr9563
ID  - ofr9563
ER  -