References

References
Pennak, R.W. (1990). Freshwater in- vertebrates of the United States. Pro- tozoa to Mollusca (3rd ed.). New York: John Wiley and Sons.
Pennak
3
Freshwater invertebrates of the United States
1990
Thorpe, J.H. & Covich, A.P. (1991). Ecology and classification of North American freshwater invertebrates. New York: Academic Press.
Thorpe
Ecology and classification of North American freshwater invertebrates
1991
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