Relief shown by shading and spot heights. Depths shown by gradient tints and soundings.
"Supplement to National Geographic, February 1976, page 144A, vol. 149, no. 2--Peoples of the Soviet Union."
Includes text, col. ill., list of "Ethno-administrative units", "Key to ethno-linguistic groups," list of "Administrative units of the Soviet Union," and list of geographic equivalents and abbreviations.