Shells and Other Invertebrates of the United States; Over 600 Illustrations; by Walter Freeman Webb.Walter Freeman Webb1937
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 Illustrated. By Walter Freeman Webb.Webb, Walter Freeman, b.1942
Dynamic response of shells to externally-applied dynamic loads / John W. Leech, T.H.H. Pian, Emmett A. Witmer, and Walter Herrmann.John W. Leech1962
