?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Hassall%2C+A.G.&rft.aulast=Hassall&rft.aufirst=A.G.&rft.date=2005&rft.title=Investigation+of+management+practices+and+economic+viability+of+vineyards+for+organic+wine+production&rft.genre=proceeding