TY  - BOOK
AU  - Duncan,Ray
TI  - Extending DOS: a programmers's guide to protected-mode DOS 
SN  - 0201567989
PY  - 1992///
CY  - Reading, Mass.
PB  - Addison-Wesley
KW  - MS-DOS (Computer file)
KW  - PC-DOS (Computer file)
KW  - Operating systems (Computers)
ER  -