TY  - RPRT
TI  - Evaluations of duck habitat and estimation of duck population sizes with a remote-sensing-based system
AU  - Lewis M. Cowardin
AU  - Terry L. Shaffer
AU  - Phillip M. Arnold
PY  - 1995
UR  - https://pubs.usgs.gov/publication/bsr2
ID  - bsr2
ER  -