[Some aspects of the economic organization of bovine mastitis prophylaxis in Bulgaria].
D000818:Animals; D002031:Bulgaria; D002417:Cattle; D003365:Costs and Cost Analysis; D004782:Environmental Health; D005260:Female; D008414:Mastitis, Bovine / Q000517:prevention & control*
Quelques aspects de l'organisation economique de la prophylaxie des mastities chez les vaches en Bulgarie