Crowley, Thomas H. <br/><br/>
Understanding computers : 
Thomas H. Crowley. 
 - New York :  McGraw-Hill,  [1967] 
 - ix, 142 p. :  ill. ;  20 cm. 
<br/><br/> Includes index 
<br/><br/>Includes Bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers--Popular works.