Bello, A.C.P.P. Cunha, A.P. Braz, G.F. Lara, M.C.S.H. Reis, J.K.P. Haddad, J.P.H. Rocha, M.A. Leite, R.C. Frequency of equine viral arteritis in Minas Gerais State, Brazil Subjects--Topical Terms: CAVALOARTERITEVIROSE ANIMALMINAS GERAIS