Institution: | 1. Economics, School of Social Studies, University of Manchester, Manchester M13 9PL, UK;2. Department of Economics, North Carolina State University, Box 8110, Raleigh, NC 27695, USA;3. Department of Agricultural and Resource Economics, Box 8109, North Carolina State University, Raleigh, NC 27695-8109, USA;4. Department of Economics, University of British Columbia, 997-1873 East Mall, Vancouver, Canada BC V6T 1Z1 |