New trends in integrated science teaching 
edited by Richmond, P.E 
 - Paris  Unesco  1977 
 -  volume II 
<br/><br/><br/>eng. 
<br/><br/><label>ISBN: </label>9231011146 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science-Study and teaching
<br/><br/><label>Dewey Class. No.: </label>507  / NEW