TY - RPRT TI - Contaminant levels in colonial waterbirds from Green Bay and Lake Michigan, 1975–80 AU - G. H. Heinz AU - T.C. Erdman AU - S. D. Haseltine AU - C. Stafford PY - 1985 DO - 10.1007/bf00394064 UR - https://pubs.usgs.gov/publication/5222029 ID - 5222029 ER -