JEL-codes:PQZ (search for similar items in EconPapers) New Economics Papers: this item is included in nep-env Date: 2005-06-04 Note: Type of Document - pdf; pages: 17. Proceedings of the Fifth Joint Conference on Agriculture, Food, and the Environment, June 17-18, 1996, Padova, Italy. Working Paper WP96-04, Session VII, Paper 1, University of Minnesota, Department Center for International Food and Agricultural Policy Publication Date: 1996 View list of references