The International yearbook of educational and instructional technology 1988  [Texte imprimé] / 
ed. C. W. Osborne, Duncan Harvis 
 - London:  Kogan Page,  1988 
 - 538 p. ;  22 cm 
<br/><br/><label>ISBN: </label>1-85091-472-9 
<br/><br/><label>Dewey Class. No.: </label>371.33