@book{47982,
	author = {Rahman, Obaidur},
	title = {Spatial pattern of adoption of high yeilding varieties (HYVs) of rice and wheat and its input and output characteristics in a controlled area, Kaultia Union, Bangladesh / },
	publisher = {University of Dhaka,},
	year = {1983.},
	address = {Dhaka : },
	note = {Thesis (MS )—Department of Geography & Environment, University of Dhaka, 1983.
}
}