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)
N1  - Includes index
ER  -