TY  - RPRT
TI  - Winter use of douglas-fir forests by Blue Grouse in Colorado
AU  - Brian S. Cade
AU  - Richard W. Hoffman
PY  - 1990
DO  - 10.2307/3809661
UR  - https://pubs.usgs.gov/publication/70124342
ID  - 70124342
ER  -