?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Skrabule%2C+Ilze+&rft.aulast=Skrabule&rft.date=2006&rft.title=The+assessment+of+some+crop+management+methods+in+barley+and+potato+seed+production+for+organic+farming&rft.genre=proceeding