00271nam a2200109Ia 4500008004100000041000800041082001900049100002100068245003400089260003000123300000800153211209s1987    xx            000 0 und d  aeng  a005.43 N87 ANG  aANGERMEYER, JOHN  aTRICKS OF THE MS-DOS MASTERS   aUSAbHOWARD W. SONSc1987  a542