The effect of social and economic changes in the People's Republic of Bulgaria on morbidity from anthrax.
D000818:Animals; D000881:Anthrax / Q000453:epidemiology* / Q000517:prevention & control / Q000662:veterinary; D002031:Bulgaria; D002417:Cattle; D002418:Cattle Diseases / Q000517:prevention & control; D004812:Epidemiologic Methods; D009784:Occupational Diseases; D012959:Socioeconomic Factors