000 00340nam a2200145Ia 4500
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040 _e137975
_aMAIN
041 _aEnglish
082 _a001.64 S47T
100 _aStevins, AL.
245 0 _aTech yourself DOS
260 _aNew Delhi
_bPublications
_c1990
300 _a267 p.
942 _cBK
999 _c78672
_d78672