TY  - BOOK
AU  - ASHLEY,RUTH
AU  - FERNANDEZ,JUDI
TI  - PETER NORTON'S ADVANCED DOS 6 / 
U1  - 005.44 
PY  - 1993///
CY  - [S.N] : 
PB  - BRADY PUBLISHING ، 
KW  - MS - DOS ( COMPUTER OPERATING SYSTEM )
ER  -