00325nam a2200121Ia 4500008004100000041000800041082001500049100001800064245005800082250000800140260004200148300001300190231228s1992    xx            000 0 und d  aeng  a5.133bDYS  aDYSON (Peter)  aUnderstanding Norton Desh top for windows version 2.0  a2nd  aNew YorkbSan fransico, sybex -c1992  axxv, 562