[Veterinary measures in viral hepatitis in ducklings].
D000367:Age Factors; D000383:Agriculture; D000818:Animals; D004372:Ducks; D006520:Hepatitis, Animal / Q000517:prevention & control*; D011201:Poultry Diseases / Q000517:prevention & control*
Veterinarno-sanitarnye meropriatiia pri virusnom gepatite utiat.