000 00307nam a2200133Ia 4500
100 _aSchwartz/Mischa
942 _cBK
654 _atelecommunication
245 _aTelecomminication Networks:Protocols
260 _bPearson Education
_c1987
082 _a621.382
_bSCH
300 _a749
546 _aENGLISH
999 _c18997
_d18997