000 00258nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aTyagi, Deepak
245 0 _aInformation Technology
260 _aNew Delhi
_bA.P.H.
_c2010
300 _a298p.
942 _cBK
999 _c13453
_d13453