TY  - BOOK
AU  - Conacher,A.J.,ed
AU  - Sala,Maria,ed
TI  - Land degradation in mediterranean environments of the world: nature and extent, causes and solutions 
SN  - 0-471-96317-8
AV  - GE160 .M47 L35
PY  - 1998///
CY  - Chichester, New York
PB  - John Wiley
N1  - Incluye bibliografia
ER  -