Ward, Barbara <br/><br/>
Only one earth;   the care and maintenance of a small planet / 
Barbara Ward [and] Rene Dubos  
 - England  Penguin Books  1972 
 - 304p  ill.   20 cm.  
<br/><br/>Included index  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomica
<br/><br/><label>Dewey Class. No.: </label>525  / WAR