S.W.Buol R.J Southard <br/><br/>
Soil Genesis and Classification 

 - 4TH 
 - USA  Lowa State Press  2002 
 - 494 
<br/><br/><label>ISBN: </label>9-780813828732 
<br/><br/><label>Dewey Class. No.: </label>631.4  / BUO