?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Hadatsch%2C+S.&rft.aulast=Hadatsch&rft.aufirst=S.&rft.date=2000&rft.title=Potentials+of+Organic+Farming+in+the+Region+of+Marchfeld+(Austria)&rft.genre=proceeding