?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Latacz-Lohmann%2C+Uwe&rft.aulast=Latacz-Lohmann&rft.aufirst=Uwe&rft.date=2002&rft.title=An+economic+evaluation+of+the+Organic+Farming+Scheme&rft.genre=proceeding