Silva, F.F.P. da Horvath, M.B. Silveira, J.G. Pieta, L. Tondo, E.C. Occurrence of Salmonella spp. and generic Escherichia coli on beef carcasses sampled at a brazilian slaughterhouse Subjects--Topical Terms: BOVINOCARCACACARNESALMONELLACONTAMINACAOESCHERICHIA COLI