000 00331nam a22001457a 4500
005 20210629143523.0
008 210629b ||||| |||| 00| 0 eng d
041 _aeng
100 _aSilvester, P.P.
_924383
245 _aThe unix system guide book
250 _a2nd
260 _aNew Delhi
_c1991
300 _a334p
942 _cBK
999 _c61801
_d61801