Magalhães, L. A.; Carvalho, J. F. de. Morphologic Studies of Schistosoma Mansoni Strains from Belo Horizonte MG and S. José Dos Campos, SP (Brazil) . Rev. saúde pública 1973, 7 (3), 289-294. https://doi.org/10.1590/S0034-89101973000300010.