Short description: In Russian. Yermansky, Osip Arkadevich. Theory and Practice of Rationalization. Moscow; Leningrad: State Publishing House, 1930. Teoriya i praktika ratsionalizatsii. In Russian /Theory and Practice of Rationalization.. 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. SKU8994490