title: [Setting of "double" standards for chemical substances in the atmosphere].
mesh_terms: D000393:Air Pollutants / Q000633:toxicity*; D008452:Maximum Allowable Concentration
chemical_list: D000393:Air Pollutants
vernacular_title: O "dvoĭnom" normirovanii khimicheskikh veshchestv v atmosfernom vozdukhe