TY JOUR TI WORKING OUT THE METHODS FOR THE SPECIFIC DIAGNOSTICS OF NODULAR DERMATITIS USING DIAGNOSTIC SMALLPOX IN SHEEP KW cattle KW nodular dermatitis KW exotic trans-boundary disease KW spread KW convalescents KW diagnostics KW blood serum KW antigen KW serological reactions KW smallpox in sheep KW set of diagnostic agents. JO Bulletin of KSAU AU Nikitin, E.B. AU Proskurina, L.I. AU Kulyk, I.I. PY 2021 IS 0 PB Krasnoyarsk State Agrarian University