Innovations in science and technology education:Vol. I 

 - UNESCO  Paris  1986 
 - 188p. 
<br/><br/>Layton, D  Layton, D 
<br/><br/><label>ISBN: </label>9231023748 
<br/><br/><label>Nat. Bib. No.: </label>5016 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>37:5/6INN 
<br/><br/><label>Subjects--Topical Terms: </label><br/>S&T education<br/>Mathematics teaching
<br/><br/><label>Universal Decimal Class. No.: </label>37:5/6  1