TY  - BOOK
AU  - Nunes Paulo A L D
TI  - Contingent valuation of natural parks: assessing the warmglow propensity factor
SN  - 1-84064-945-3
U1  - 333.783 
PY  - 2002///
CY  - Cheltenham
PB  - Edward Elgar
KW  - Contingent valuation
KW  - Parks-economic aspects
ER  -