00298pam a2200121 a 4500020000500000041000500005082001000010100002600020245007600046250000900122260003200131300001300163  c  h  a5.133  aDYSON (Peter)eauthor  aUnderstanding Norton Desh top for windows version 2.0hTextual Document  a2nd   bSan fransico, sybex -c1992  axxv, 562