Drupal-Bibcite0<style face="normal" font="default" size="100%">Prevalence of antibodies to Leptospira hardjo in bulk tank milk from unvaccinated dairy herds in the south-west region of Poland</style><style face="normal" font="default" size="100%">Prevalence of antibodies to Leptospira hardjo in bulk tank milk from unvaccinated dairy herds in the south-west region of Poland</style>