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Bahls, L.L. 1979. Benthic diatom diversity as a measure of 

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Bahls, L.L. 1993. Periphyton Bioassessment Methods for Montana 

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Bahls, L.L., Bob Bukantis, and Steve Tralles. 1992. Benchmark 



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Barbour, M.T., J. Gerritsen, B.D. Snyder, and J.B. Stribling. 



1999. Rapid Bioassessment Protocols for Use in Streams and 

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Dillard, G.E. 1999. Common Freshwater Algae of the United 

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Johansen, J.R. 1999. Diatoms of Aerial Habitats. Chapter 12 in 

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Karr, J.R., and D.R. Dudley. 1981. Ecological perspectives on 

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Krammer, K., and H. Lange-Bertalot. 1988. Bacillariophyceae, 

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Krammer, K., and H. Lange-Bertalot. 1991a. Bacillariophyceae, 

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