?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=van+den+Bosch%2C+F.&rft.aulast=van+den+Bosch&rft.aufirst=F.&rft.date=1996&rft.issn=0265-1491&rft.atitle=The+continental+spread+of+plant+disease&rft.title=Aspects+of+Applied+Biology&rft.pages=249-251&rft.genre=article