000 00321nam a2200133Ia 4500
008 160630s9999 xx 000 0 und d
020 _a9788120311183
100 _aGupta, Prakash C.
245 _aData Communication
260 _aN.Delhi
_bR.B.Publications,
_c2001
300 _a489
942 _cREF
999 _c533
_d533