Abílio, F.J.P. and Watanabe, T. (1998) “ Occurrence of Lymnaea columella (Gastropoda: Lymnaeidae), first intermediate host of Fasciola hepatica, for the state of Paraíba, Brazil ”, Revista de Saúde Pública, 32(2), pp. 184–185. doi:10.1590/S0034-89101998000200013.