[Application and problems of Newcastle-disease vaccination in practice].
D000818:Animals; D002645:Chickens; D009521:Newcastle Disease / Q000517:prevention & control*; D011201:Poultry Diseases / Q000517:prevention & control*; D014611:Vaccination / Q000662:veterinary; D014765:Viral Vaccines / Q000008:administration & dosage*
D014765:Viral Vaccines
Anwendung und Probleme der Praxis der Newcastle-Impfung