Department of Resource Economics
College
of Natural Resources
and the Environment
University of Massachusetts, Amherst, MA
Departamento
de Desarrollo
Rural y Regional
Facultad
de Estudios Ambientales y Rurales
Pontificia Universidad Javeriana, Bogota
© 2005 Department of Resource Economics, College
of Natural Resources and the Environment
University of Massachusetts Amherst. resec@resecon.umass.edu