1Frydendahl K.Prevalence of serogroups and virulence genes in Escherichia coli associated with postweaning diarrhoea and edema disease in pigs and a comparison of diagnostic approaches[J].Veterinary Microbiology,2002,82(2):169-182.
1Frydendahl K.Prevalence of serogroups and virulence genes in Escherichia coli associated with postweaning diarrhoea and edema disease in pigs and a comparison of diagnostic approaches[J].Veterinary Microbiology,2002,82(2):169-182.