Grzimek H C Bernhard Ed. <br/><br/>
Grzimek's Encyclopedia of ecology 

 - New York  Van Nostrand and Reinhold U S A     1973 
 - 705p. Bib p. 683-86  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography-Modern
<br/><br/><label>Dewey Class. No.: </label>U:(G:5)k, L3