000 00241nam a2200109Ia 4500
008 200701s1995 xx 000 0 eng d
100 _aSINGH .R.P
245 0 _aCOMMUNICATION SYSTEMS
260 _bTMH
_c1995
300 _a592
942 _2ddc
_cGE
999 _c1770
_d1770