Bhuyan, Rabindra Nath Studies on ammonia and total free amino acid concentration in different tissues and rate of ammonia excretation in an airbreathing fish : clarias batrachus - NEHU - Shillong NEHU, Dept. of Zoology 1983 - [4],31p.; 29cm. Dewey Class. No.: DS / 597.5804192 BHU