Williams, Marcia L. <br/><br/>
Distance learning :    the essential guide /  
Marcia L. Williams, Kenneth Paprock, Barbara Covington. 
 - Thousand Oaks, Calif. :    Sage ,    c1999. 
 - 166 p. ;    23 cm. 
<br/><br/>Includes bibliographical references (p.157-159) and index. 
<br/><br/><label>ISBN: </label>0761914420 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Distance education -- United States.<br/> Telecommunication in education.
<br/><br/><label>Dewey Class. No.: </label>371.35