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Subject: Aquatic biology
Subject: Benthic macroinvertebrates
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Freshwater ecology
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Limnology
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Water -- Pollution
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Comparison of the aquatic macroinvertebrate communities among three feeder streams of the East Branch Clarion River Lake, Elk and McKean Counties, Pennsylvania
Study of the dilution effect of a small tributary on the macroinvertebrate community of an acid mine stream
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