Ellington, Henry. <br/><br/>
A handbook of educational technology / 
Fred Percival, Henry Ellington, and Phil Race. 
 - 3rd ed. 
 - London :  East Brunswick, N.J. :  Kogan Page ;  Nichols Pub.,  1993. 
 - xi, 263 p. :  ill. ;  22 cm. 
<br/><br/> Fred Percival first author on 2nd ed. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0749408499 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational technology--Handbooks, manuals, etc.
<br/><br/><label>Subjects--Index Terms: </label>Educational technology