Short description: In Russian. Kulsky, Leonid Adolfovich. Active silica and the problem of water quality. Kyiv: Naukova dumka, 1969. Aktivnaya kremnekislota i problema kachestva vody. In Russian /Active silica and the water quality problem . The image is provided for reference only. It may reflect condition of one of the available copies or only help in identifying the edition. Please feel free to contact us for a detailed description of the copies available. SKU7427850