000			00362nam a2200145Ia 4500
008			230711s9999||||xx |||||||||||||| ||und||
041			_aENG
082			_a4 _bAG-C
100			_aAggarwal,D.C
245		0	_aComputer communication and ISDN systems
250			_a1ST
260			_c1989 _aNew Delhi _bKhanna Publishers
650			_aComputer Engineering
942			_cBK
999			_c1271 _d1271