Milk yield, age at first calving, and the risk of BSE: An analysis at the farm level in France
| Autor: | La Bonnardière, C., Bonaiti, B., Abrial, D., Gasqui, P., Calavas, D., Ducrot, C., Barnouin, J. |
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| Zdroj: | In Preventive Veterinary Medicine 2007 78(1):67-78 |
| Databáze: | ScienceDirect |
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