000 00284nam a2200121Ia 4500
008 160122s9999 xx 000 0 und d
041 _aEnglish
100 _aSumitabha Das
245 _aUnix concept and application
260 _bDelhi:TMH
_c2000
300 _a565p.
650 _aComputer
999 _c4177
_d4177