Resistance of gastrointestinal nematodes to the most commonly used anthelmintics in sheep, cattle and horses in Spain

1. Martínez-Valladares, M.
2. Geurden, T.
3. Bartram, D.J.
4. Martínez-Pérez, J.M.
5. Robles-Pérez, D.
6. Bohórquez, A.
7. Florez, E.
8. Meana, A.
9. Rojo-Vázquez, F.A.