Islam, M. R., M. S. Islam, M. Iahiruddin, and M. S. Hoque. “?EFFECTS OF SULPHUR, ZINC AND BORON ON YIELD, YIELD COMPONENTS AND NUTRIENT UPTAKE OF WHEAT”. Biological Sciences - PJSIR, vol. 42, no. 3, June 1999, pp. 137-40, https://v2.pjsir.org/index.php/biological-sciences/article/view/2135.