TY - RPRT TI - Organochlorine residues and elemental contaminants in U.S. freshwater fish, 1976-1986: National Contaminant Biomonitoring Program AU - C. J. Schmidt AU - James L. Zajicek AU - Thomas W. May AU - Deborah Cowman PY - 1999 UR - https://pubs.usgs.gov/publication/70193432 ID - 70193432 ER -