Held, Gilbert, <br/><br/>
IBM® PC AT user's reference manual / 
Gilbert Held. 
 - Hasbrouck Heights, N.J. :  Hayden Book Co.,  c1985. 
 - 453 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>
<br/><br/><label>ISBN: </label>0810463946 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>IBM Personal Computer AT.<br/>MCE
<br/><br/><label>Dewey Class. No.: </label>005.43  / HEL