TY  - BOOK
AU  - Pimentel David Ed.
TI  - World soil erosion and conservation
T2  - Cambridge Studies in Applied Ecology and Resource Management
U1  - J:1:7, N3 
PY  - 1993///
CY  - Cambridge
PB  - Cambridge University Press       
KW  -  Soil
KW  - Agriculture
ER  -