MAYAHI, M; SHAPOURI, M R SEIFYABAD; DARABI, G. GOUMARAN. Effect of time vaccination on immunization of broiler chicks against influenza A subtype H9 N2 virus. The Indian Journal of Animal Sciences, Delhi, India, v. 76, n. 1, 2011. Disponível em: https://epubs.icar.org.in/index.php/IJAnS/article/view/3489. Acesso em: 23 oct. 2025.