In Russian. Volkova, Zoya Vasilievna. Dielectric separation of various polyconcentrates and materials. Moscow: Nedra, 1975. Dielektricheskaya separatsiya razlichnykh polikontsentratov i materialov. In Russian /Dielectric separation of different polyconcentrates and materials. All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU6914826