Monday, November 15, 2010

Sources

  1. Patterson D. 1996. Free Living Freshwater Protozoa. London, UK: Manson Publishing Ltd. 290 p.
  2. Pennak R W. 1989. Freshwater Invertebrates of the United States: Protozoa to Mollusca. Toronto, Canada: John Wiley and Sons. 179 p.
  3. Thorp JH, Covich AP. 1991. Ecology and Classification of North American Freshwater Invertebrates. San Diego, California: Academic Press Inc. 300 p.
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