@book{53314,
	author = {S. M. Kamran. and Chowdhry, Bhawani Shankar.},
	title = {Usage and advantages of integrated services digital network (ISDN) and videoconferencing as a case study /},
	publisher = {Electronic Engineering,},
	year = {1999.},
	address = {MUET, Jamshoro :}
}