TY - RPRT TI - Phosphorus amendment reduces bioavailability of lead to mallards ingesting contaminated sediments AU - G. H. Heinz AU - D. J. Hoffman AU - D. J. Audet PY - 2004 DO - 10.1007/s00244-003-3036-3 UR - https://pubs.usgs.gov/publication/5224305 ID - 5224305 ER -