Improvement of the efficacy of IB spray vaccinations in layers: a field experiment

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How to Cite: Matthijs, M. , Dwars, R. & Van Eck, J. (2001) “Improvement of the efficacy of IB spray vaccinations in layers: a field experiment”, Vlaams Diergeneeskundig Tijdschrift. 70(5). doi: https://doi.org/10.21825/vdt.89939