TY - CPAPER AU - N Schulze-Thier, Veterinary Practitioner, Ascheberg, Germany, Schulze-thier.norbert@web.de TI - Head-to-head comparison of 1- and 2-ds Mycoplasma hyopneumoniae (M hyo) vaccination programmes ? a field observation 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 - 2012 DA - 2012/06/01 L1 - https://www.aasv.org/library/swineinfo/Content/IPVS/2012/389.pdf SE - Practitioner's Line ER -