?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Fischer%2C+Meike&rft.aulast=Fischer&rft.aufirst=Meike&rft.date=2005&rft.title=Micronutrient+status+in+two+long-term+trials+with+fertilisation+treatments+and+different+cropping+systems&rft.genre=proceeding