TY  - RPRT
TI  - Relative toxicity of lead and five proposed substitute shot types to pen-reared mallards
AU  - John W. Grandy
AU  - Louis N. Locke
AU  - George E. Bagley
PY  - 1968
DO  - 10.2307/3798926
UR  - https://pubs.usgs.gov/publication/5221272
ID  - 5221272
ER  -