Pennak, (1978)
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Pennak, R. 1978. Freshwater Invertebrates of the united States. 2nd Edit. Wiley Interscience. 803 pp. New York, USA.
Pennak, R. 1978. Freshwater Invertebrates of the united States. 2nd Edit. Wiley Interscience. 803 pp. New York, USA.