000 00320nam a2200121Ic 4500
005 20250120053331.0
008 240520s9999 xx 000 0 und d
040 _cDLC
245 1 0 _aMicrosoft ms dos x operating system… ref. manual
264 1 _b[S.l. : s.n.]
_c[198-?]
300 _aindex 7 p.; 27cm
942 _cBK
_2lcc
999 _c19101
_d19101