[Vaccination against Newcastle disease with Hertfordshire virus].
D000818:Animals; D009521:Newcastle Disease / Q000276:immunology*; D014611:Vaccination; D014612:Vaccines; D014780:Viruses
D014612:Vaccines
NEWCASTLE DISEASE/immunology; VACCINES AND VACCINATION; VIRUSES
La vaccinazione contro la malattia di Newcastle con virus di Hertfordshire.