1. American Public Health Association, American Water Works Association, Water Pollution Control Federation (1980) Standard methods for the examination of water and wastewater, 15th ed, Am Publ Hlth Assoc, Washington, D.C.
2. Emerson K, Russo RC, Lund RE, and Thurston RV (1975) Aqueous ammonia equilibrium calculations: Effect of pH and temperature. J Fish Res Bd Can 32:2379–2383.
3. Erickson RJ (1985) An evaluation of mathematical models for the effects of pH and temperature on ammonia toxicity to aquatic organisms. Water Res 19:1047–1058.
4. European Inland Fisheries Advisory Commission (1970) Water quality criteria for European freshwater fish. Report on ammonia and inland fisheries. EIFAC Tech Paper No 11, p 12.
5. Evans JW (1979) The construction and use of a continuous-flow bioassay apparatus to determine a preliminary un-ionized ammonia 96-hour LC50 for the crayfish,Orconectes nais. M.S. Thesis, Univ. Kansas, Lawrence, KS 76 p.