Duncan, Ray. <br/><br/>
Extending DOS edited by / 
Ray Duncan ... [et al.]. 
 - Reading, MA :  Addison-Wesley,  1990. 
 - xvi, 432 p. : 
<br/><br/> Title on cover : programming MS-DOS for the 1990s. 
<br/><br/><label>ISBN: </label>0201550539 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DOS (Computer program language).<br/>Operating systems (Computers).