Joffe, Joyce.  1969 <br/><br/>
Conservation/ 
Joffe, Joyce. 
 - London,  Aldus Books Ltd.  1969. 
 - 2-188 p.  illus. (some col.),col pic. col maps, port.  28 cm. 
 - Interdependence in nature .
<br/><br/> Illus. on lining papers. 
<br/><br/>Includes bibliographical reference and index. 
<br/><br/><label>ISBN: </label>0490001629 
<br/><br/><label>LCCN: </label>70472170  
<br/><br/><label>Nat. Bib. No.: </label>B70-05749 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources--Juvenile literature.
<br/><br/><label>LC Class. No.: </label>S936  / .J59 1969 
<br/><br/><label>Dewey Class. No.: </label>333.7/2