000 00273nam a2200121Ia 4500
100 _aSingh,Neetu
020 _a9788182203624
942 _cBK
245 _aOperating system
260 _aGlobal Vision Publ House, New Delhi
_c2011
082 _a001.61 Sin
300 _axv,295
999 _c47929
_d47929