[Polezhaev's method for determining quartz in the presence of silicates].
D004391:Dust / Q000032:analysis; D008722:Methods; D008903:Minerals / Q000032:analysis; D009787:Occupational Medicine; D012822:Silicon Dioxide / Q000032:analysis*
D004391:Dust; D008903:Minerals; D012822:Silicon Dioxide
K metodu Polezhaeva dlia opredeleniia kvartsa v prisutstvii silikatov.