Zafar, A.U., Qadeer, M.A. and Riazuddin, S. 2003. STUDIES ON THE PRODUCTION OF SPORE CRYSTAL BY BACILLUS THURINGIENSIS CAMB 3-023 IN THE STIRRED FERMENTOR. Biological Sciences - PJSIR. 46, 4 (Aug. 2003), 242–245.