Webb's catalog of recent Mollusca from all parts of the world حسب Webb, Walter Freeman, 1869-

Foreign land and freshwater shells from all parts of the world except the United states and Canada. حسب Webb, Walter Freeman, 1869-

United States Mollusca a descriptive manual of many of the marine, land and fresh water shells of North America, north of Mexico. All species covered in the book are fully illustra... حسب Webb, Walter Freeman, 1869-