?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=+Krist%C3%B3+Istv%C3%A1n&rft.aulast=Krist%C3%B3&rft.aufirst=Istv%C3%A1n&rft.isbn=978-963-306-589-1&rft.date=2018&rft.title=The+effect+of+different+weed+control+technologies+on+yield+of+maize+and+profitability+of+maize+production&rft.genre=proceeding