Hudson, Norman W. <br/><br/>
Soil conservation 

 - London :  B.T. Bastsford,  1971 
 - 320 p.  : ilus. 
<br/><br/><label>LCCN: </label>16805 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos--Conservación.
<br/><br/><label>Dewey Class. No.: </label>631.45  / H8