HARTLEY,JAMES <br/><br/>
DESIGNING INSTRUCTIONAL TEXT 

 - 2 
 - LONDON  KP  1988 
 -  175 
<br/><br/> SC-27 
<br/><br/><label>ISBN: </label>NCST  32.5 
<br/><br/><label>Dewey Class. No.: </label>989