Ward Barbara <br/><br/>
Only one earth    The care and maintenance of a sma    

 - Harmondsworth  Penguin Books           1972 
 - 304p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H, L2