000 00295nam a2200121Ia 4500
082 _a005.282
_bDAS
100 _aDas, Sumitabha.
245 _aUnix : Concepts and Applications
250 _a4th
_b20th reprint
260 _aNew Delhi
_bTata McGraw Hill
_c2013
300 _axxi; 671p.
650 _aMCA
999 _c2269
_d2269