[Several physico-chemical properties of manganese ore and quartz dust].
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004391:Dust / Q000032:analysis*; D008345:Manganese / Q000032:analysis*; D012822:Silicon Dioxide / Q000032:analysis*
D004391:Dust; D008345:Manganese; D012822:Silicon Dioxide
Nekotorye fiziko-khimicheskie svoĭstva pyli margantsevykh rud i kvartsa.