Wright, Lawrence C., Irrigated Agriculture Research and Extension Center Washington State University 24106 N. Bunn Road Prosser, Washington 99350, United States

• Journal of the Entomological Society of British Columbia Vol. 102 (2005): Journal of the Entomological Society of British Columbia - Articles
  Sources of Spring and Fall Hop Aphid, Phorodon humuli (Schrank), (Homoptera: Aphididae) Migrants in South Central Washington
  Abstract  PDF