000 00263nam a22001097a 4500
082 _a621.782 REN'T
100 _aRENTON, R. M
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245 _aTELECOMMUNICATION PRINCIPLES (IN MKS UNITS)
260 _aLONDON
_bSIR ISAAC
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300 _a448P
942 _cBK
999 _c569083
_d569083