Field efficacy of ear tags impregnated with insecticide against the cattle tick Boophilus microplus.
D000818:Animals; D002417:Cattle / Q000469:parasitology*; D005260:Female; D008297:Male; D013751:Tetrachlorvinphos / Q000008:administration & dosage; D013987:Ticks
D013751:Tetrachlorvinphos