TY  - BOOK
AU  - Pimentel David Ed.
TI  - World soil erosion and conservation
T2  - Cambridge studies in applied ecology and resource management
U1  - U672(J:1:4).1.N9, N3 
PY  - 1993///
CY  - New York
PB  - Cambridge University Press U S A    
KW  - Agricultural Geography
N1  - Bib p. 311-44
ER  -