Encyclopedia Britannica, Inc <br/><br/>
The new encyclopedia Britannica :  Knowledge in depth / 
Encyclopedia Britannica, Inc, 
 - 15th ed. 
 - Chicago :  Encyclopedia Britannica, Inc,  1976. 
 - 1087 p. :  Col. ill. ;  29 cm. 
<br/><br/><label>ISBN: </label>0852293054 
<br/><br/><label>Dewey Class. No.: </label>031/  / ENC