title: Status of the screwworm (Diptera: Calliphoridae) control program in the southwestern United States during 1977.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000517:prevention & control; D004175:Diptera; D006076:Government; D007300:Insect Control; D010572:Pest Control, Biological; D012610:Screw Worm Infection / Q000517:prevention & control / Q000662:veterinary; D014481:United States