R. Burnell Held <br/><br/>
Soil conservation in perspective 

 - Baltimore  Johns Hopkins Press  1965 
 - 344p 
<br/><br/>R. Burnell Held & Marion Clawson: Soil conservation in perspective.  Baltimore.  Johns Hopkins Press, 1965.--(631.45HEL)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.45  / HEL