TY  - BOOK
AU  - Dixon,John A.
AU  - Sherman,Paul B.
TI  - Economics of protected areas: a new look at benefits and costs 
SN  - 1-853830-97-6
U1  - 333.72 20
PY  - 1991///, c1990
CY  - London
PB  - Earthscan
KW  - Parques nacionales
KW  - Aspectos económicos
KW  - Conservation land
KW  - Economics
N1  - Bibliography: p213-221. -Includes index
ER  -