Balfour Hepher Nutrition of pond fishes - New York Cambridge University Press 1988 - 388p Balfour Hepher: Nutrition of pond fishes. New York. Cambridge University Press, 1988. 0-521-34150-7--(639.31HEP) ENGLISH ISBN: 0-521-34150-7 Dewey Class. No.: 639.31 / HEP