000			00356cam a2200145ua 4500
020			_a0-07-100313-4
082			_a621.382 _bSCH/P
100	0		_aSchilling, Donald L
245	0	0	_aPrinciples of communication systems
250			_a2nd ed.
260			_aNew York _bMc Graw Hill _c1986
300			_axix, 749p.
650	0		_aCommunication Systems
942			_cBK
999			_c9162 _d9162