DOS 4.0 reference /
Christopher, Ken W.
Christopher, Ken W.New DOS 4.0.
Feigenbaum, Barry A.
Saliga, Shon O.
New York : Wiley,
c1989.
Supplement to The new DOS 4.0 by the same authors.
Includes index.
PC-DOS (Computer file)
IBM Personal System/2 (Computer system)