000 00286nam a2200121Ia 4500
100 _aChattopadhyay, S.
020 _a9788120330511
942 _cBK
245 _aSystem software
260 _aPHI Learning Private Limited, New Delhi
_c2007
082 _a001.6425 Cha
300 _axii, 195
999 _c49176
_d49176