Concurrent PC DOS / 
Phil Balma ... et al. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1986. 
 - x, 178 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0131672711 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Concurrent PC DOS (Computer file)<br/>PC-DOS (Computer file)