bushland

n.

未开垦森林地带；

Screw-Worm Control Through Release of Sterilized Flies
The Nutritional Requirements of Screwworm Larvae.
Screwworm Eradication Program
Development of systemic insecticides for pests of animals in the United States
Insecticide 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 Lice
Research on the Use of systemic Insecticides for the Control of Livestock Pests.