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Definitions, methods and exchange of information
Dekker, T., (1978)
The measurement of the non-marketable benefits of agricultural wildlife management : the case of the Dutch peat meadow land
Brouwer, Roy, (1995)
Assessing the role of economic instruments in a policy mix for biodiversity conservation and ecosystem services provision: a review of some methodological challenges
Barton, D.N., (2009)