000			00361nam a2200169Ia 4500
008			240220s9999 xx 000 0 und d
041			_aENG
100			_aStevens A. L.
245		0	_aTeach yourself dos
260			_aNew Delhi
260			_b"Bpb Publication,"
260			_c1990
300			_a267p.
365			_b90
650			_aCOMPUTER
942			_cDBK
999			_c20923 _d20923