Soil survey manual 
United state department of agriculture 
 - 437 p  il  24 cm 
<br/><br/> Incluye: Indice 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos - supervición - Manual
<br/><br/><label>Dewey Class. No.: </label>631.41  / SOI