M. A. Kashem, N. Sultana, S. C. Samanta, and A. M. A. Kamat, “?BIOCHEMICAL CHANGES IN WHEAT SEED DUE TO THE EFFECT OF BLACK POINT AT DIFFERENT ~EVELS OF MANURING”, Pakistan Journal of Scientific & Industrial Research, vol. 42, no. 2, pp. 89–92, Apr. 1999.