[Sulfur dioxide in the atmosphere of Leningrad].
D000397:Air Pollution; D001272:Atmosphere; D013455:Sulfur / Q000009:adverse effects*; D013458:Sulfur Dioxide
D013458:Sulfur Dioxide; D013455:Sulfur
AIR POLLUTION; SULFUR/injurious effects
Sernistyi angidrid v atmosfernom vozdukhe leningrad.