?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Hatcher%2C+Scientist+Paul&rft.aulast=Hatcher&rft.aufirst=Paul&rft.date=2004&rft.title=Combining+physical+and+cultural+weed+control+with+biological+methods+%C3%A2%C2%80%C2%93+prospects+for+integrated+non-chemical+weed+management+strategies+&rft.genre=proceeding