United Nations Educational,Science and Cultural Organization ( UNESCO ) <br/><br/>
African Journal of Science and Technology Volume 2: number  2 December 2001  

 - Nairobi    UNESCO-ROSTA  2001 
<br/><br/><label>ISBN: </label>Science and Engineering  Series. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>607.6 UNI