Second International Congress for sheep veterinarians. Proceedings of the Sheep and Beef 19th Seminar held at Massey University, Palmerston North, New Zealand, February 12-16 1989

animal diseases bacteriose bacterioses bacteriosis control de enfermedades disease control enfermedades de los animales foot rot grasslands herbage maladie des animaux mammite mastitis medicina veterinaria micotoxinas mycotoxine mycotoxins parasite parasites pedero praderas servicios veterinarios veterinary medicine veterinary services virose viroses virosis