The virtual learning enviroment 
Edi: Keith Cameron. ; Guest Edi: Mark Peterson 
 - Lisse  Swets & Zeitlinger Publishers  1998 
 - 462 p.  Vol:11 ; No:4  23 cm. 
<br/><br/> Special Issue 
<br/><br/><label>ISSN: </label>09588221 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>An International Journal
<br/><br/><label>LC Class. No.: </label>418 COM 
<br/><br/><label>Dewey Class. No.: </label>418 COM