?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Sch%C3%A4fer%2C+Prof.+Dr.+Martina&rft.aufirst=Martina&rft.aulast=Sch%C3%A4fer&rft.date=2006&rft.title=The+role+of+organic+agriculture+in+networks+for+rural+development&rft.genre=proceeding