000 00306nam a2200133Ia 4500
008 230401s2011 xx 000 0 eng d
082 _a621.38
100 _aSINGH (R P)
245 0 _aCOMMUNICATION SYSTEM ANALOG & DIGITAL
250 _a2
260 _bDELHI TMH
_c2011
300 _a584
942 _2ddc
_cBTECH
999 _c306
_d306