Ryther, John H. books & textbook
Aquaculture: The Farming and Husbandry of Freshwater and Marine Organisms
Bardach, John E. Ryther, John H. McLarney, William O.
John Wiley & Sons /1974-10-11 Paperback / 896 Pages
isbn-10: 0471048267 / isbn-13: 9780471048268