TY - CPAPER AU - C. Drexler, A.A.S. Eggen TI - PRV CHALLENGE OF 22-WEEK OLD PIGS, VACCINATED ONCE AT 10 WEEKS OF AGE (MDA+ve) 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 - 2002 DA - 2002/06/01 L1 - https://www.aasv.org/library/swineinfo/Content/IPVS/2002/HEALTH/393.PDF SE - Posters: Pig Health ER -