Martenes, R <br/><br/>
The use and effects of embedded support devices in independent learning 
Rob Martens 
 -  Open Universitent  1998 
 - 249p.:  ill';  25cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9789051897332 
<br/><br/><label>LC Class. No.: </label>DUCE LC5800.M37