15TH World Congress of Soil Science :  ACAPULCO, MEXICO, JULY 1994 / 
INTERNATIONAL SOCIETY OF SOIL SCIENCE 
 - MEXICO :  INSTITUTO NACIONAL DE ESTADISTICA GEOGRAFIA E INFORMATICA ,  1994 
 - 9 VOL 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SUELOS - ESTUDIOS
<br/><br/><label>LC Class. No.: </label>S591 C2 I88