Teaching and learning at a distance :   what it takes to effectively design, deliver, and evaluate programs / 
Thomas E. Cyrs, editor 
 - San Francisco, Calif. :  Jossey - Bass Publishers,  1997. 
 - 130 p. 
<br/><br/><label>ISBN: </label>0-7879-9884-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EDUCACION A DISTANCIA
<br/><br/><label>Dewey Class. No.: </label>374.4  / T253