?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Weber%2C+Dipl.-Ing.+sc.+agr.+Ernst+Albrecht&rft.aulast=Weber&rft.aufirst=Ernst+Albrecht&rft.date=2008&rft.title=Searching+for+an+alternative+oil+crop+for+organic+farming+systems+in+temperate+climates&rft.genre=proceeding