[Observations and research on the immunizing effectiveness of an inactivated vaccine against avian infectious bronchitis].
D000818:Animals; D001991:Bronchitis / Q000276:immunology*; D002645:Chickens; D011201:Poultry Diseases / Q000276:immunology*; D014611:Vaccination; D014765:Viral Vaccines; D014777:Virus Diseases / Q000276:immunology*
D014765:Viral Vaccines
Osservazioni e ricerche sull'efficacia immunizzante di un vaccino inattivato contro la bronchite infettiva aviare.