00398nam a2200145Ia 4500008004100000020001500041041000800056082001600064100001900080245006200099250000600161260005300167300001100220650002100231210716s1992    xx            000 0 und d  a8123901283  aeng  a005.45 LIED  aLien, David A.  aIncludes dos 4.0 ms-dos: the basic course.bBasic course.  a1  aNew DelhibCBS Publishers and Distributorsc1992  axv,155  aMS DOS(005.3682)