Pons, L. J.  <br/><br/>
Soil ripening and soil classification 

 - Wageningen :   International Institute for Land Reclamation and Improvement,   1965. 
 - 128 p. 
 - Publi .
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEOLOGIA<br/>CLASIFICACION DE SUELOS
<br/><br/><label>Universal Decimal Class. No.: </label>55