@book{80360,
	author = {Raihan, Md. Sazuwar and Latif,  M. A. Supervisor},
	title = {On Principal n-Ideals of A Distributive Nearlattice /},
	publisher = {Department of Mathermatics, University of Rajshahi,},
	year = {2006},
	address = {Rajshahi :}
}