Bramwell, Anna. <br/><br/>
Ecology in the 20th century :  a history / 
Anna Bramwell. 
 - New Haven :  Yale University Press,  1989. 
 - xii, 292 p. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>
<br/><br/><label>ISBN: </label>0300043430 0300045212 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--History.
<br/><br/><label>Dewey Class. No.: </label>574.50904  / BRE