000			00517nam a2200193Ia 4500
999			_c3769 _d3769
005			20191208144428.0
008			170527s2016||||xx |||||||||||||| ||und||
020			_a817800075-X
041			_aeng
082			_a384.3 H817d2
100			_aHousley, Trevor
245		0	_aData communications & teleprocessing systems _cTrevor Housley
250			_a2nd ed.
260			_aHyderabad _bBS Publications _c1987
300			_axix, 474p.
650			_aComputer networks
650			_aData transmission systems
942			_cBK