000 00445nam a22001697a 4500
999 _c827368
_d827368
003 OSt
020 _a9780070667556
082 _a621.391 FRE
100 _aFrenzel Louis E
245 _aPrinciples of Electronic Communication Systems
250 _a3
260 _aNew Delhi
_bMcGraw Hill
_c2015
300 _a885
440 _aPrinciples of Electronic Communication Systems
650 _aElectronic Communication Systems
942 _2ddc
_cBK