United States.: Bureau of Entomology and Plant Quarantine

Subjects

Insecticides--Testing, Insecticides., Biological insecticides, Insect pests--Control., Insecticides, DDT (Insecticide, Insect pests--Control, Organic compounds--Synthesis., Biological insecticides--Testing, Rotenone, Aerial spraying and dusting in agriculture, Botanical insecticides, Bromomethane., Cyanides, Derris., Grasshoppers--Control, Grasshoppers--Control., Insecticide resistance, Insecticides--Testing., Japanese beetle--Larvae--Control, Plant quarantine., Rotenone--Industrial applications, Rotenone., Alfalfa weevil, Alkaloids