1. Bulkley RV, Leung ST, Richard JJ (1981) Organochlorine insecticide concentrations in fish of the Des Moines River Iowa, 1977–78. Pestic Mon J 15(2):86–89.
2. Butler PA, Schutzmann RL (1978) Residues of pesticides and PCBs in estuarine fish, 1972–76--National Pesticide Monitoring Program. Pestic Mon J 12(2):51–59.
3. Epps EA, Bonner FL, Newsom LD, Carlton R, Smitherman RO (1967) Preliminary report on a pesticide monitoring program in Louisiana. Bull Environ Contam Toxicol 2(6):333–339.
4. Frink CR, Sawhney BL, Kulp KP, Fredette CG (1982) Polychlorinated biphenyls in Housatonic River sediments in Massachusetts and Connecticut: determination, distribution, and transport. Conn Agric Exp Sta, New Haven, Bull 800, 20 pp.
5. Graves JB, Mayfield GU, Newsom JD (1981) Residues of ‘persistent’ pesticides decreasing. La Agric 25(2):8–9.