Innovations in science and technology education  Vol. IV 
Edited by David, Layton 
 - Belgium  Unesco  1992 
 - 220p. 
<br/><br/><br/>eng. 
<br/><br/><label>ISBN: </label>92-3-102779-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science-Study
<br/><br/><label>Dewey Class. No.: </label>507  / INN