TY  - RPRT
TI  - Spring foraging distribution and habitat selection by Double-crested Cormorants on the Penobscot River, Maine USA
AU  - B.F. Blackwell
AU  - W.B. Krohn
PY  - 1997
UR  - https://pubs.usgs.gov/publication/70019351
ID  - 70019351
ER  -