International yearbook of educational and instructional technology 1986/87 /  
Association for Educational and Training Technology; editor, C.W.Osborne. 
 - London [etc.] :   Kogan Page [etc.],   cop.1986. 
 - 481 p. ;   23 cm. 
<br/><br/> Indice. 
<br/><br/><label>ISBN: </label>0-85038-944-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educación---Directorios
<br/><br/><label>Universal Decimal Class. No.: </label>058.7:37 37(058)"1986/87"