TY - BOOK AU - Norton,Peter TI - Peter Norton's DOS 5.0 guide SN - 0136630480 U1 - QA/76.76.O63 PY - 1991/// CY - New York PB - Brady KW - MS-DOS (Computer operating system). KW - PC-DOS (Computer operating system). N1 - Notes Registration no : 24479 and 25599 ER -