Keywords: Geologic Map of the Urals (compiled in 1930).jpg en Geologic Map of the Urals compiled in 1930 1 200 000 Worksheet 0-40-XII Proceedings of the All-Union Geological Association Issue 208 M L 1933 http //g-to-g com/index php version eng module 5 id 3064 en Georgii Frederiks E Kuznetsov M Kruglov 1930 pd-old Unclear-PD-US-old-70 Geological maps of Russia |