TY  - RPRT
TI  - A model of northern pintail productivity and population growth rate
AU  - Paul L. Flint
AU  - J. Barry Grand
AU  - Robert F. Rockwell
PY  - 1998
DO  - 10.2307/3802565
UR  - https://pubs.usgs.gov/publication/70020440
ID  - 70020440
ER  -