000 00260nam a2200109Ia 4500
008 190516s9999 xx 000 0 und d
100 _aRAY JOAN &RAY WILLIAM
245 0 _aTEACH YOURSELF UNIX SYSTEM
260 _c2000
_bTECHMEDIA
300 _a811
942 _cBK
999 _c17461
_d17461