TY  - RPRT
TI  - A double survey estimate for sighting probability of sea otters in California
AU  - James A. Estes
AU  - Ronald J. Jameson
PY  - 1988
DO  - 10.2307/3801061
UR  - https://pubs.usgs.gov/publication/1007794
ID  - 1007794
ER  -