TY  - BOOK
AU  - Duncan,Ray
TI  - Extending DOS
SN  - 0201550539
PY  - 1990///
CY  - Reading, Mass.
PB  - Addison-Wesley
KW  - Operating systems (Computers)
KW  - MS-DOS (Computer file)
KW  - PC-DOS (Computer file)
N1  - Includes index
ER  -