Browsing by Author "Johnson, Paul D."
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- Sustaining America's Aquatic Biodiversity. Freshwater Snail Biodiversity and ConservationJohnson, Paul D. (Virginia Cooperative Extension, 2005-09-01)Provides a description of the structure and appearance of freshwater snails, their distribution and diversity, how they live and reproduce, why they are of importance, threats to their survival, and measures that can be taken to mitigate threats; document also includes web links to more information.