[On a method for the determination of sulfates, chlorides and tarry substances in dust in the air].
D002712:Chlorides / Q000737:chemistry*; D004391:Dust / Q000737:chemistry*; D013431:Sulfates / Q000737:chemistry*
D002712:Chlorides; D004391:Dust; D013431:Sulfates
CHLORIDES/chemistry; DUST/chemistry; SULFATES/chemistry