Methods for assessment of soil degradation 
edited by R. Lal...[et al.] 
 - Boca Raton (Florida)  CRC Press  cop. 1998 
 - 558 p.  24 cm 
 - Advances in soil science .
 - Advances in soil science .
<br/><br/><label>ISBN: </label>084937443X 
<br/><br/><label>Subjects--Index Terms: </label>Conservacion de suelos Suelo Degradacion Ciencia del suelo