Innovations in science and technology education Vol.IV / 
edited by David Layton 
 - Paris :  UNESCO,  1992. 
 - 218p. 
<br/><br/><label>ISBN: </label>9231027794 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science and technology <br/>Teachers training and professional development
<br/><br/><label>Dewey Class. No.: </label>507  / INN.N2