| http://www.w3.org/ns/prov#value | - This data collection tourism). and analysis places the values in their context, this facilitates their interpretation and use, This is mainly explained by the fact that many eco- notably through benefit transfer. system services are ???public goods??? or ???common goods???: they are often open access in character and Over 1,100 values have been collected so far, non-rival in their consumption.
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