Items where Author is "Sowray, P. A."

Item Type No Grouping

The use of weather data and counts of aphids in field to predict incidence of yellowing viruses of sugar-beet crops in England in relation to use of insecticides. (1975) Watson, Marion A., Heathcote, G. D., Lauckner, F. Bruce, Sowray, P. A. picture_as_pdf