TY  - RPRT
TI  - Factors affecting the distribution of mallards wintering in the Mississippi Alluvial Valley
AU  - James D. Nichols
AU  - Kenneth J. Reinecke
AU  - James E. Hines
PY  - 1983
DO  - 10.1093/auk/100.4.932
UR  - https://pubs.usgs.gov/publication/5221832
ID  - 5221832
ER  -