TY  - BOOK
AU  - Schmitz Ruth.
TI  - Practical dos
SN  - 0078320348
AV  - QA 76.76 .O63 1989 .63 1989
PY  - 1989///
CY  - United states
PB  - McGraw Hill
KW  - operating system
KW  - pc dos computer file
KW  - ms dos computer file
N1  - Include index
ER  -