Clark, John O.E. . <br/><br/>
Computers at work /  Textual Documents 
John O.E.Clark. 
 - London :  Paul Hamlyn ,  c1969. 
 - 159P. :  ill ;  18cm. . 
<br/><br/><label>Subjects--Index Terms: </label>Computer works 
<br/><br/><label>Dewey Class. No.: </label>511  / C 548 C