000 00309nam a22001331a 4500
020 _a9788121206013
082 _a004
_bSAH/I
100 _aSah S L
245 _aInformation technology/
_cby Sah S L
260 _aNew Delhi:
_bJnan,
_c1999.
300 _a348p.
650 _aInformation Technology
942 _cBK
999 _c20130
_d20130