TY - CPAPER AU - Halbur, PG. TI - PCV2 AND M. HYO. COINFECTION RESULTS IN SEVERE RESPIRATORY DISEASE AND PMWS AND EFFECT OF TIMING OF M. HYO. VACCINATION ON PCV2 INFECTION T2 - International Pig Veterinary Society Congress DP - American Association of Swine Veterinarians DB - AASV Swine Information Library UR - https://www.aasv.org/library/swineinfo/ PY - 2004 DA - 2004/06/01 L1 - https://www.aasv.org/library/swineinfo/Content/IPVS/2004/1759.pdf SE - 7. Practitioner's Line ER -