Institution: | 1. Department of Economics and Management, University of Helsinki, P.O. Box 27, 00014?, Helsinki, Finland 2. MTT Agrifood Research Finland, Latokartanonkaari 9, 00790?, Helsinki, Finland 3. Government Institute for Economic Research VATT, P.O. Box 1279, 00101?, Helsinki, Finland 4. Finnish Environment Institute SYKE, P.O. Box 140, 00251?, Helsinki, Finland
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