Vernon, Robert S., Agriculture Canada Research Station Vancouver, BC V6T 1X2, Canada

• Journal of the Entomological Society of British Columbia Vol. 85 (1988): Journal of the Entomological Society of British Columbia - Articles
  Efficacy and Residues of Foliar Sprays Against the Lettuce Aphid, Nasonovia ribisnigri (Homoptera: Aphididae), on Crisphead Lettuce
  Abstract  PDF