[On air pollution with 3,4-benzopyrene in the region of briquet factories].
D000397:Air Pollution; D001580:Benzopyrenes; D003033:Coal Tar; D007220:Industrial Waste; D014586:USSR
D001580:Benzopyrenes; D007220:Industrial Waste; D003033:Coal Tar
O zagriaznenii atmosfernogo vozdukha 3,4-benzpirenom v raĭone briketnoĭ fabrikĭ.