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A case-control questionnaire survey of risk factors for porcine reproductive and respiratory syndrome (PRRS) seropositivity in Danish swine herds
J. Mousing, A. Permin, S. Mortensen, A. Bøtner, P. WillebergVolume:
55
Year:
1997
Language:
english
Pages:
6
DOI:
10.1016/s0378-1135(96)01321-1
File:
PDF, 440 KB
english, 1997