Custer, C. M., Custer, T. W., and Coffey, M., 2000, Organochlorine chemicals in tree swallows nesting in pool 15 of the Upper Mississippi River: Bulletin of Environmental Contamination and Toxicology, v. 64, no. 3, p. 341-346. Abstract Keywords Polychlorinated-biphenyls, Tachycineta bicolor, Fox River, Green-bay, accumulation, Wisconsin, sediments, USA