?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=S+M&rft.au=de+Villiers%2C+S+M&rft.aulast=de+Villiers&rft.atitle=The+trends+and+future+of+biotechnology+crops+for+insect+pest+control&rft.title=African+Journal+of+Biotechnology&rft.issn=1684-5315&rft.date=2011&rft.volume=10&rft.pages=4677-4681&rft.issue=23&rft.genre=article