DDT for control of the biting sheep louse.
PARISH
H E
HE
RUDE
C A
CA
D000818:Animals; D003634:DDT; D005018:Ethyl Chloride; D010373:Lice Infestations; D008003:Phthiraptera; D012756:Sheep; D034561:Sheep, Domestic
D005018:Ethyl Chloride; D003634:DDT