Prevalence of Intramammary Infection in Pregnant Heifers / Milan Vasiľ, Jozef Bíreš - Iné súvisiace diela: 9th Middle European Buiatrics Congress. Budapest, 6-11 July 2008. 338 s. : held within the framework of the XXVth Jubilee World Buiatrics Congress. -, 2008 KE304