Geotz P.W Ed. <br/><br/>
The New Encyclopedia Britanica 

 - Chicago  Chicago Encyclopedia Print       1987 
 - 1042  cm. 
 -  16 .
<br/><br/><label>Standard No.: </label>84 
<br/><br/><label>Source: </label> Annuals, Advances 
<br/><br/><label>Dewey Class. No.: </label>k,1,L68    m7.1-.29