?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Alins%2C+Georgina&rft.aulast=Alins&rft.aufirst=Georgina&rft.date=2007&rft.title=Effect+of+management+spontaneous+cover+crop+on+rosy+apple+aphid%2C+green+apple+aphid+and+their+natural+enemies+in+an+apple+organic+orchard&rft.genre=proceeding