TY  - BOOK
AU  - Barbier,Edward B.
TI  - Economics and ecology: new frontiers and sustainable development 
SN  - 0412481804
U1  - 338.1 
PY  - 1993///
CY  - London
PB  - Chapman & Hall, 
KW  - AGRICULTURA
KW  - ASPECTOS ECONOMICOS
ER  -