Effect of interactions between some of the nutrient elements on the growth, chemical composition and yield of wheat, rice and mungbean / Md. Nurul Islam. [PhD Thesis] Islam, Md. Nurul Grain. 633.1 ISE Thesis (PhD)--Department of Soil, Water and environment, University of Dhaka, 2001. Includes reference. Dhaka : University of Dhaka , 2001. 2001. 2001 Text [8], xvi, 273 p. : eng