Diagnosis of the nervous form of maedi-visna infection with a high frequency in sheep in Castilla y León, Spain

1. Benavides, J.
2. Gómez, N.
3. Gelmetti, D.
4. Ferreras, M.C.
5. García-Pariente C., null
6. Fuertes, M.
7. García-Marín, J.F.
8. Pérez, V.