TY - CPAPER AU - Neumann E, Simpson S, Wagner J, et al TI - Longitudinal field study of the effect of a commercial porcine circovirus type 2 vaccine on postweaning mortality in New Zealand farms T2 - Journal of Swine Health and Production DP - American Association of Swine Veterinarians DB - AASV Swine Information Library UR - https://www.aasv.org/library/swineinfo/ PY - 2009 DA - 2009/07/01 L1 - https://www.aasv.org/library/swineinfo/Content/SHAP/2009/v17n4p204.pdf SE - Jul-Aug ER -