Ethelberg, Jan <br/><br/>
Food chains 
Jan Ethelberg 
 - London  Adam&Charles Black  1974 
 - 40 p.  21 cm. 
 - Nature in close-up .
<br/><br/><label>ISBN: </label>0713616342 
<br/><br/><label>Dewey Class. No.: </label>591.53  / ETH