[On the silicon dioxide content in the urine of Karaganda coal miners].
D003032:Coal Mining; D006801:Humans; D007623:Kazakhstan; D008297:Male; D012822:Silicon Dioxide / Q000652:urine*; D012829:Silicosis / Q000652:urine*
D012822:Silicon Dioxide
O soderzhanii dvuokisi kremniia v moche u shakhterov ugol'nykh shakht Karagandy.