The world book encyclopedia of science :. 

 - Chicago, Ill. :  World Book,  1990. 
 - 8 v. :  ill. (some col.) ;  29 cm. 
<br/><br/> The planet earth. 
<br/><br/><label>ISBN: </label>0716632268 (set) 
<br/><br/><label>LCCN: </label>90070521 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Dictionaries.<br/>Science--Encyclopedias.
<br/><br/><label>LC Class. No.: </label>Q121  / .W65 1990 
<br/><br/><label>Dewey Class. No.: </label>503