?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Jahn%2C+Gabriele&rft.aulast=Jahn&rft.aufirst=Gabriele&rft.date=2005&rft.title=The+Reliability+of+Organic+Certification%3A+An+Approach+to+Investigate+the+Audit+Quality+&rft.genre=proceeding