Clepper Henry Ed. <br/><br/>
Leaders of American conservation 

 - New York  Ronald Press Co. U S A      1971 
 - vii,353p  cm. 
<br/><br/> Bibliography:P08-350 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography
<br/><br/><label>Dewey Class. No.: </label>U671w73,N7, L1