New encyclopedia of science 

 - Milwouker  Purnell Reference Books  1979 
 - 16v. 
<br/><br/><label>ISBN: </label> RS 2000.00 
<br/><br/><label>Source: </label> RS 2000.00 
<br/><br/><label>Dewey Class. No.: </label>503.21 NEW