Investigations on Prevalence and Antimicrobial Resistance of Enterohaemorrhagic Escherichia Coli (Ehec) Among Dairy Farms in the North Part of the Republic of Bulgaria
Urumova, Valentina, Lyutzkanov, Mihni, Petrov, Vladimir
Investigations On The Resistance Of Porcine Commensal E. Coli Isolates To Beta Lactams
Urumova, Valentina