TY  - BOOK
AU  - Barrow,Christopher J.
TI  - Land degradation: development and breakdown of terrestrial environments 
SN  - 0521353335
U1  - 631.4 
PY  - 1991///
CY  - Cambridge, Eng.
PB  - Cambridge University Press, 
KW  - HOMBRE
KW  - INFLUENCIA EN LA NATURALEZA
ER  -