Hard Cover, New York: The Ronald Press Company, 1958. Good in Good dust jacket.
Sound binding and hinges. Clean, tanned pages. Owner's name, some writing on front endpaper. Cloth over boards is edge rubbed. DJ has shelf wear, edge wear, tanning. Author, who was the chief of the U.S. Fish and Wildlife Branch of Fishery Biology, covers subjects such as the influence of varying environments, the behavior of marine organisms, and the role of conservation, along with practical problems to be solved - such as the role of disease and poison, plankton harvesting, farming the sea's brackish waters, and the improvement of fishing vessels and their gear. 9.25" (23 cm) tall; 321 pages.