. . "Insecticides Canada." . . "Pulvérisation et poudrage aériens en sylviculture Canada." . . "Insectes forestiers, Lutte contre les Canada." . . . . . "Of aerial spray applications carried out to protect Canadian forests from insect attack from 1945-90. The data are taken from reports to the Annual Pest Control Forum and its predecessor organization but little is available pre-1960. Information is presented on operational spray applications by province, with data on each province ordered chronologically by year. Data on research applications are presented first by year and then by province. Data on insecticides and aircraft used in each year is also given."@en . . . . . . . . . . . . . . "Aerial spray applications on Canadian forests, 1945 to 1990"@en . . "Aerial spray applications on Canadian forests, 1945 to 1990" . . .