TY  - RPRT
TI  - Nutrient additions by waterfowl to lakes and reservoirs: predicting their effects on productivity and water quality
AU  - Bruce A. Manny
AU  - W.C. Johnson
AU  - R.G. Wetzel
PY  - 1994
DO  - 10.1007/bf00027847
UR  - https://pubs.usgs.gov/publication/70006520
ID  - 70006520
ER  -