TY  - RPRT
TI  - Acid precipitation and food quality: Inhibition of growth and survival in black ducks and mallards by dietary aluminum, calcium and phosphorus
AU  - Donald W. Sparling
PY  - 1990
DO  - 10.1007/bf01054992
UR  - https://pubs.usgs.gov/publication/5222399
ID  - 5222399
ER  -