000 00310nam a2200109Ia 4500
008 151128s9999 xx 000 0 und d
041 _aENG
245 _aMicrosoft MS-Dos : user's guide
_bOperating system version 2.2
260 _c1986
_aWasihington
_bMicrosoft Corporation
300 _aviii, 340p.
942 _cBK
999 _c28525
_d28525