Factors Affecting the Distribution of a Freshwater Sponge by Rader, Russell B.

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Critical Thermal Maxima of Nymphs of Three Plecoptera Species from an Ozark Foothill Stream by Ernst, Mark R., Beitinger, Thomas L., Stewart, Kenneth W.

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Ecological Studies of the Sand-Dwelling Community of an East Texas Stream by Whitman, Richard L., Clark, William J.

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Ecology and Reproductive Strategy of a South Louisiana Freshwater Mussel, Glebula rotundata (Lamarck) (Unionidae:Lampsilini) by Parker, Robert S., Hackney, Courtney T., Vidrine, Malcolm F.

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Ripistes parasita (Schmidt) (Oligochaeta:Naididae), a Distinctive Oligochaete New to North America by Simpson, Karl W., Abele, Lawrence E.

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Effects of Starvation and Resumption of Feeding on the Cell Populations of Hydra oligactis by Flechtner, Valerie R., Lesh-Laurie, Georgia E.

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Observations on the Limnological Factors Associated with Three Species of the Simulium jenningsi Group (Diptera:Simuliidae) in New York State by Gordon, A. Elizabeth

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Effect of Intermittent Flow Regulation on Temperature and Macroinvertebrate Distribution and Abundance in a Michigan River by Kraft, Kenneth J., Mundahl, Neal D.

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Predation on mosquitoes by juveniles of Mesostoma spp. (Turbellaria) [Aedes aegypti, Anopheles stephensi, Culiseta melanura] by Kolasa, J

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A Gut-Marker and Food Entrainment Device for Evaluating Food Consumption by Net-Spinning Caddisflies by Howell, Douglas A., Voshell, J. Reese, Engebretson, Jo A.

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Life Cycle and Reproduction of Nephelopsis obscura Verrill (Hirudinea:Erpobdellidae) in Permanent Ponds of Northwestern Minnestoa by Peterson, Dirk L.

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The Occurrence of Oil and the Distribution of Hexagenia (Ephemeroptera:Ephemeridae) Nymphs in the St. Marys River, Michigan and Ontario by Hiltunen, Jarl K., Schloesser, Donald W.

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Cellulase Activity in Gastropods: Should It Be Used in Niche Separation? by Kesler, David H.

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The Phoretic Association of Urnatella gracilis (Entoprocta:Urnatellidae) and Nanocladius downesi (Diptera:Chironomidae) on Corydalus cornutus (Megaloptera:Corydalidae) by Tracy, Bryn H., Hazelwood, Donald H.

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Chironomid Taxa Richness: Natural Variation and Use in Pollution Assessment by Lenat, David R.

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Structure of Benthic Macroinvertebrate Communities in a Midwestern Plains Stream by MacFarlane, Malcolm B.

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Drift of Ephemeroptera and Plecoptera in Two Colorado Rivers by Stewart, Kenneth W., Szczytko, Stanley W.

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An Inexpensive and Simple Elutriation Device for Separation of Invertebrates from Sand and Gravel by Whitman, Richard L., Inglis, J. M., Clark, W. J., Clary, R. W.

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Effect of Aggregation on the Respiration Rate of the Freshwater Unionid Bivalve, Elliptio complanata (Solander) by Paterson, Colin G.

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Food Habits and Dietary Overlap among Six Stream Collector Species by Short, Robert A.

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