СЕРВЕТНИК, Н. Р. EFFECT OF LEAD ON IMMUNOLOGICAL INDICATORS OF LAYING HENS. Scientific Progress & Innovations, [S. l.], n. 3, p. 197–199, 2014. DOI: 10.31210/visnyk2014.03.42. Disponível em: https://journals.pdau.edu.ua/visnyk/article/view/1012. Acesso em: 31 aug. 2025.