The use of D.D.T. as an antitick sheep dip.
D000818:Animals; D003634:DDT; D005018:Ethyl Chloride; D007938:Leukemia; D007945:Leukemia, Lymphoid; D012756:Sheep; D013987:Ticks; D014520:Urethane
D014520:Urethane; D005018:Ethyl Chloride; D003634:DDT
CHLOROPHENYL CHLOROETHANE (DDT); ETHYL CARBAMATE/therapy--in veterinary medicine; LEUKEMIA/lymphatic--in animals; SHEEP-DIP; TICKS/eradiction