TY  - BOOK
AU  - Lal R Ed.
AU  -  Blum W H Ed.
AU  -  Valentine C Ed.
TI  - Methods for assessment of soil degradation
T2  - Advances in soil science
U1  - J : 1 : 4, N8 
PY  - 1998///
CY  - Boca Raton
PB  -  CRC Press     
ER  -