TY  - BOOK
AU  - Ewing,Sheila C.
TI  - PC DOS workbook
SN  - 0880221313
U1  - QA/76.76.O63 
PY  - 1985///
CY  - Indianapolis
PB  - Que Corporation
KW  - IBM Personal Computer -- Programming.
KW  - PC-DOS (Computer operating system).
ER  -