Emerson, F.V. <br/><br/>
Agricultural Geology 

 - JOHN WILEY & SONS  N.Y.  1928 
 - 377p.  fig, ill. 
<br/><br/><label>Nat. Bib. No.: </label>1254 
<br/><br/><label>Universal Decimal Class. No.: </label>550.8  / EME