WWW.SPECIMENSHELLS.NET SHELL BOOKS General Land and Freshwater Freshwater Mussels of the Midwest Freshwater Mussels of Tennessee Freshwater Mussels of Texas Liguus Tree Snails of South Florida Missouri Naiades - A Guide to the Mussels of Missouri Mollusca of the Cape Verde Islands Pearly Mussels of New York State Snails & Slugs of Eastern South Africa Tropical Landshells of the World		General Land and Freshwater