Short description: In Russian. Fedorovsky, Nikolai Mikhailovich. Short Definer of Minerals and Rocks: Petrograd: Scientific and Technical Department of the All-National Economic Council: Scientific and Technical Publishing House, Petrograd Branch, 1919. 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. SKU9177029