Ewald, William R <br/><br/>
Environment and policy, the next fifty years 

 - Bloomington  Indian U.P.  1968 
 - xiv,459 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOCIAL SCIENCE
<br/><br/><label>Dewey Class. No.: </label>363.7  / ENV