000 00299 a2200133 4500
082 _a005.44
_bSTE
090 _c720
_d810
100 _aStevens,AL
245 _aTeach yourself DOS
260 _aNew Delhi
_bBPB
_c1990
_g1990
300 _axii, 267p
_c22cm.
650 _aOPERATING SYSTEMS
942 _cSR
999 _c29907
_d29907