TY - CPAPER AU - W.W. Laegreid; M. Pires-Alves; H.L. Vu and F.A. Osorio TI - Schultz Lecture: Variation in Search of a Theme: The Extraordinary Diversity; of Porcine Reproductive and Respiratory Syndrome Virus T2 - ISU Swine Disease Conference for Swine Practitioners DP - American Association of Swine Veterinarians DB - AASV Swine Information Library UR - https://www.aasv.org/library/swineinfo/ PY - 2013 DA - 2013/11/01 L1 - https://www.aasv.org/library/swineinfo/Content/ISU/2013/069.pdf ER -