Kent, Graeme. <br/><br/>
Blackboard to computer :  a guide to educational aids / 
Graeme Kent. 
 - London :  Ward Lock Educational,  1969 
 - 128 p. :  ill., plates ;  22 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>706230469 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual education.<br/>Education-- Audio-visual aids.
<br/><br/><label>Dewey Class. No.: </label>371.33