Bohl, Marilyn. <br/><br/>
Introduction to IBM direct access storage devices / 
Marilyn Bohl. 
 - Chicago :  Science Research Associates,  1981. 
 - 224 p. :  ill. ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0574211403 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer storage devices.<br/>File organization (Computer science).