In Russian. Safonov, Mikhail Vasilievich. Practical Manual for Applying for an Invention in the Field of Mining. Moscow: 1970. Prakticheskoe posobie po oformleniyu zayavki na izobretenie v oblasti gornogo dela. In Russian /Practical Manual for Applying for an Invention in the Field of Mining . 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. SKU7436430