Ewald, William R., Jr. <br/><br/>
ENVIRONMENT and change: the next fifty years 

 - London  Indiana University press  1968 
 - xvi, 397 p. 
<br/><br/><label>ISBN: </label>74819 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment
<br/><br/><label>Dewey Class. No.: </label>333.7  / ENV