Erickson, Fritz J <br/><br/>
Effective DOS 5.0, Shell version / 
Fritz J. Erickson, John A. Vonk. 
 - Dubuque, IA :  Business and Educatioan Technologies,  c1994. 
 - xii, 111 p. : ill. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers)