TY  - BOOK
AU  - Curtin,Dennis P.
TI  - DOS 4: a complete course 
SN  - 0132190648
PY  - 1990///
CY  - Englewood Cliffs, N.J. : 
PB  - Prentice Hall, 
KW  - DOS 4 (Computer operating system).
KW  - DOS 4.0
ER  -