UNITED NATIONS EDUCATIONAL, SCIENTIFIC AND CULTURAL ORGANIZATION <br/><br/>
WORLD SCIENCE REPORT 1993 

 - 1ST 
 - PARIS  UNESCO  1993 
 - 277P 
<br/><br/><label>ISBN: </label>923102938X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>500/WOR