Ward, Barbara,  <br/><br/>
Only one earth :  the care and maintenance of a small planet / 
by Barbara Ward and Rene Dubos. 
 - Norton :  New York,  1972. 
 - xxv, 225 pages ;  21 cm. 
<br/><br/> '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.' 
<br/><br/><label>ISBN: </label>0393063917 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology