[Health and hygiene evaluation of granodiorite, a filtering material for treating drinking water].
D055598:Chemical Phenomena; D002621:Chemistry; D005374:Filtration; D012800:Siberia; D012822:Silicon Dioxide / Q000032:analysis*; D014881:Water Supply
C007886:granite; D012822:Silicon Dioxide
Sanitarno-gigienicheskaia otsenka granodiorita--fil'truiushchego materiala dlia obrabotki pit'evoĭ vody.