title: [Production tests of a vaccine against viral hepatitis in ducks].
mesh_terms: D000818:Animals; D004372:Ducks; D006520:Hepatitis, Animal / Q000276:immunology*; D007109:Immunity; D011201:Poultry Diseases / Q000276:immunology*; D014586:USSR; D014611:Vaccination / Q000662:veterinary; D014765:Viral Vaccines / Q000627:therapeutic use*
chemical_list: D014765:Viral Vaccines
vernacular_title: Proizvodstvennye ispytaniia vaktsiny protiv virusongo gepatita utiat