S. K. SHAHEEN; K. VIJAYALAKSHMI; K. PAVANA JYOTSNA; N. D. PRASANNA; G. REVATHI; P. JAYALAKSHMI. ISOLATION AND CHARACTERIZATION OF NITRIFYING BACTERIA FROM THE GUT OF EARTHWORM (EISENIA FOETIDA). The Bioscan 2010, 5, 613-616.