BfN-Schriften 696 – Economic analysis of visitation in UNESCO Biosphere Reserves. International standards of economic analysis and their implementation in the case of Germany | BFN https://www.bfn.de/publikationen/bfn-schriften/bfn-schriften-696-economic-analysis-visitation-unesco-biosphere
affinity, visitor characteristics, visitor expenditure and economic effects across all
affinity, visitor characteristics, visitor expenditure and economic effects across all