TY  - RPRT
TI  - Effects of dietary nickel on survival and growth of mallard ducklings
AU  - B. W. Cain
AU  - E. A. Pafford
PY  - 1981
DO  - 10.1007/bf01054857
UR  - https://pubs.usgs.gov/publication/5221720
ID  - 5221720
ER  -