UNESCO <br/><br/>
New trends in integrated science teaching 

 - Paris  United Nations Educational, Scientific And Cultural  1990 
 - (v.vi-238 p.) 
<br/><br/> Includes bibliography and index. 
<br/><br/><label>ISBN: </label>9231026658 
<br/><br/><label>Dewey Class. No.: </label>507  / UNE