Percival, Fred <br/><br/>
A Handbook of educational technology 
Fred Percival 
 - 2nd ed. 
 - London  Kogan Page  1988 
 - 273p. 
<br/><br/><label>ISBN: </label>0893972975 
<br/><br/><label>Dewey Class. No.: </label>371.3078 P412H -2