000 00252nam a2200109Ia 4500
008 230401s9999 xx 000 0 eng d
100 _aSINGH ( R P) SAPRE (S D)
245 0 _aCOMMUINCATION SYSTEM
250 _a2002
260 _bTMH
942 _2ddc
_cBTECH
999 _c3799
_d3799