PiotLepetit I, D Vermersch and RD Weaver (1997). “Agriculture’s Environmental Axternalities. DEA Evidence for French Agriculture.” Appl Econ 29(3): 331-338.
PiotLepetit I, D Vermersch and RD Weaver (1997). “Agriculture’s Environmental Axternalities. DEA Evidence for French Agriculture.” Appl Econ 29(3): 331-338.