?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Julian%2C+C.&rft.aulast=Julian&rft.aufirst=C.&rft.date=2002&rft.title=The+development+of+an+integrated+modelling+system+to+support+decisions+on+organic+farms&rft.genre=proceeding