Firoza Akhter, Z. N. Tahmida, R. Mondal and Zakaria Ahmed
Pakistan Journal of Biological Sciences 4 ( 11 ): 1306 - 1311 , 2001
Firoza Akhter, Zakaria Ahmed, Z. N. Tahmida and R. Mondal
Pakistan Journal of Biological Sciences 5 ( 1 ): 19 - 24 , 2002