000 00274nam a2200109Ia 4500
008 230621s9999 xx 000 0 und d
020 _a9780070534759
100 _aSumitabha Das
_91851
245 0 _aUnix : Concepts and Applications
260 _bTata McGraw-Hill
942 _cMCA
999 _c9163
_d9163