?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=H%C3%83%C2%A4ring%2C+Anna&rft.aulast=H%C3%83%C2%A4ring&rft.aufirst=Anna&rft.date=2004&rft.btitle=Organic+farming+and+measures+for+European+agricultural+policy&rft.genre=book