?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Eyre%2C+M.D.&rft.aulast=Eyre&rft.aufirst=M.D.&rft.date=2007&rft.title=The+Effects+of+Crop+Type+and+Production+Systems+on+the+Activity+of+Beneficial+Invertebrates&rft.genre=proceeding