[Studies on the neutralization test in infectious bronchitis in poultry].
D000818:Animals; D001991:Bronchitis / Q000662:veterinary; D009500:Neutralization Tests; D011201:Poultry Diseases / Q000276:immunology*; D012328:RNA Viruses / Q000276:immunology*; D014777:Virus Diseases / Q000662:veterinary*
Untersuchungen über den Neutralisationstest bei der infektiösen Bronchitis der Hühner.