title: [CONSTANT OF DISAPPEARANCE OF IONS AND ITS HYGIENIC SIGNIFICANCE].
mesh_terms: D000397:Air Pollution; D007477:Ions; D012106:Research; D012119:Respiration; D014691:Ventilation
chemical_list: D007477:Ions
keywords: AIR POLLUTION; EXPERIMENTAL LAB STUDY; IONS; VENTILATION
vernacular_title: KONSTANTA ISCHEZNOVENIIA IONOV I EE GIGIENICHESKOE ZNACHENIE.