1. 1. U.S. Geological Survey , "Surface-Water-Quality Assessment of the Yakima River Basin, Washington: Pesticide and Other Trace-Organic-Compound Data for Water, Sediment, Soil, and Aquatic Biota, 1987-91" (USGS Report | 92-644, 1992 ).
2. National contaminant biomonitoring program: Residues of organochlorine chemicals in U.S. Freshwater Fish, 1976?1984
3. 3. Washington Department of Wildlife , "Region Three Fisheries Management Annual Report. Yakima, WA" (WA DOW, 1993 ).
4. Evidence of Safety of Long-Term, High, Oral Doses of DDT for Man
5. 5. Columbia River Inter-Tribal Fish Commission , "A Fish Consumption Survey of the Umatilla, Nez Perce, Yakima and Warm Springs Tribes of the Columbia River Basin" (1994 ).