?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Weller%2C+Richard+F&rft.aulast=Weller&rft.aufirst=Richard+F&rft.date=2002&rft.title=An+overview+on+the+role+and+potential+of+forage+production+on+lowland+organic+livestock+farms&rft.genre=proceeding