@book{77814,
	title = {Studies on the  effect of sulphur from gypsum and phosphogypsum on the growth and yield of rice with a subsequent residual ffect study with wheat /},
	publisher = {University Of Dhaka, },
	year = {1983.},
	address = {Dhaka : },
	note = {Thesis (MS )-- Department of Soil, Water & Environment, University of Dhaka, 1983.}
}