Short description: In Russian. Zemenkov, Boris Sergeevich. Graphic representation of digital material. Moscow: State Scientific and Engineering Publishing House, 1931 in the region: 1932 (Ryazan: Ryaztip. Mosoblpolygraph). 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. SKU8985615