Ward, Barbara,  1914- <br/><br/>
Only one earth :  the care and maintenance of a small planet : an unofficial report commissioned by the Secretary-General of the United Nations Conference on the Human Environment, prepared with the assistance of a 152-member Committee of Corresponding Consultants in 58 countries, / 

 - Harmondsworth :  Penguin,  1972 
 - 304 p. ;  19 cm. 
<br/><br/><label>ISBN: </label>0140216014 
<br/><br/><label>LCCN: </label>72-305289 //r862 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology