In Russian. Fokin, Anatoly Fedorovich. Patent and technical activity of Barringer (Canada) in the field of exploration geophysics. Moscow: VIEMS, 1977. Patentno-tekhnicheskaya deyatel'nost' firmy Barrinzher (Kanada) v oblasti razvedochnoy geofiziki. In Russian /Barringer (Canada) Patent and Engineering Activities in Exploration Geophysics . 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. SKU7662371