Pons, L.J.  <br/><br/>
Soil ripening and soil classification: initial soil formation in alluvial deposits and a classification of the resulting soils  (Book) 

 - Wageningen, Netherlands  H. Veenman  1965 
 - 128 p.  24 cm. 
<br/><br/><label>Universal Decimal Class. No.: </label>631.44:631.482.1 PON  / 4997