Andrade, M.A. 2007. EFFECTING FACTORS ON THE VACCINATION AGAINST NEWCASTLE DISEASE FOR COMMERCIAL BREEDS OF CHICKS: INFLUENCE OF MATERNALLY DERIVED ANTIBODIES. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]. 18, 1 (Nov. 2007), 97–107. DOI:https://doi.org/10.5216/pat.v18i1.2554.