TY - BOOK AU - Dyson,Peter John TI - Mastering the Norton Utilities SN - 8170290899 U1 - 005.43 21 PY - 1989/// CY - San Francisco PB - Sybex KW - Norton Utilities KW - Utilities (Computer programs) N1 - "Through Version 4.5; for new & advanced users; covers data security & recovery"--Cover ER -