00343nam a2200145Ia 4500008004100000020001500041041000800056082001600064100002000080245001800100250000600118260003900124300001300163650002100176210716s1987    xx            000 0 und d  a9813091738  aeng  a005.45 DEVC  aDevoney, Chris.  aUsing PC DOS.  a2  aSingaporebTech Publicationsc1987  axxii,867  aMS DOS(005.3682)