title: [Protective work respiration masks and the bacterial flora of upper respiratory pathways].
mesh_terms: D001419:Bacteria / Q000302:isolation & purification*; D006801:Humans; D008397:Masks; D009784:Occupational Diseases / Q000517:prevention & control; D012137:Respiratory System / Q000382:microbiology*
vernacular_title: Ochranné pracovní respiracní masky a bakteriální flóra horních cest dýchacích.