Serological evidence of Leptospira interrogans serovar Bratislava infection and its association with abortions in cattle in northern Spain

1. Atxaerandio, R.
2. Aduriz, G.
3. Ziluaga, I.
4. Esteban, J.I.
5. Maranda, L.
6. Mainar-Jaime, R.C.