1. Ontario Ministry of the Environment laboratory sediment biological testing protocol;Bedard,1992
2. PATN: Pattern analysis reference manual;Belbin,1990
3. Toxicity test procedures for Hyalella azteca and chronic toxicity of cadmium and pentachlorophenol to H. azteca Gammarus fasciatus and Daphnia magna;Borgmann;Arch. Environ. Contam. Toxicol,1989
4. Brinkhurst, R.O. 1986. Guide to the freshwater micro-drile oligochaetes of North America. Canadian Special Publication of Fisheries and Aquatic Sciences 84: 1-259. Department of Fisheries and Oceans. Ottawa, Ontario.
5. The freshwater molluscs of Canada;Clarke,1981