权威例句
Screw-Worm Control Through Release of Sterilized FliesThe Nutritional Requirements of Screwworm Larvae.Screwworm Eradication ProgramDevelopment of systemic insecticides for pests of animals in the United StatesInsecticide residues: meat and milk residues from livestock sprays.Volatile Oils as Ovicides for the Screwworm, Cochliomyia americana C. & P.Meat and milk residues from livestock sprays.Some Phosphorus Compounds as Systemic Insecticides against Cattle Grubs.DDT Impregnation of Underwear for Control of Body LiceResearch on the Use of systemic Insecticides for the Control of Livestock Pests.