W. Ahne Fish diseases : Third copraq- session - New york Springing verlag 1980 - 252p W. Ahne: Fish diseases : Third copraq- session. New york. Springing verlag, 1980. 3-540-10406-2--(639.96AHN) ENGLISH ISBN: 3-540-10406-2 Dewey Class. No.: 639.96 / AHN