TY  - BOOK
AU  - Ashley,Ruth
AU  - Fernandez,Judi N.
TI  - DOS: self-teaching guide 
SN  - 0471590746
PY  - 1993///
CY  - New York
PB  - John Wiley & Sons
KW  - MS-DOS (Computer file)
KW  - PC-DOS (Computer file)
KW  - Operating systems (Computers)
N1  - 'Covers Versions 5 and 6'--Cover; Includes index
ER  -