[1]
de Almeida Moura, R., Guglielmi Campos, L., H Oliveira Martinez, C., de Arruda Milano, E. and de Toledo Piza, J. 1962. Evaluation of a vaccination program against poliomyelitis in São Paulo, Brazil. II. Immunity of the population before the vaccination. Instituto Adolfo Lutz Journal - RIAL. 22, (Feb. 1962), 81–86. DOI:https://doi.org/10.53393/rial.1962.22.33412.