?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Koehl%2C+Juergen&rft.aulast=Koehl&rft.aufirst=Juergen&rft.date=2005&rft.title=Identification+of+measures+for+prevention+of+black+spots+in+organically+produced+stored+carrots&rft.genre=proceeding