TY  - RPRT
TI  - Environmental and human influences on trumpeter swan habitat occupancy in Alaska
AU  - J.H. Schmidt
AU  - M. S. Lindberg
AU  - D.S. Johnson
AU  - J.A. Schmultz
PY  - 2009
DO  - 10.1525/cond.2009.080102
UR  - https://pubs.usgs.gov/publication/70036708
ID  - 70036708
ER  -