000 00247nam a2200109Ia 4500
020 _a0070472688
082 _a005.43
100 _aSINGHAL, MUKESH
245 _aADVANCED CONCEPTS IN OPERATING SYSTEMS
260 _aNEW DELDI
_b TMH
_c1994
942 _cBK
999 _c6715
_d6715