Browsing by Author "Beckwith, Radcliffe Harold, 1900-"
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Item Contributions to the geology of northern Mongolia. Bulletin of the AMNH ; v. 67, article 7(New York : The American Museum of Natural History, 1934) Beckwith, Radcliffe Harold, 1900-; Lebedeva, Z. A. (Zinaida Aleksandrovna); Kupletskii, B. M. (Boris Mikhailovich), 1894-1965.; Polynov, B. B. (Boris Borisovich), 1877-1952.; Krasheninnikov, Ippolit Mikhailovich, 1884-1947.; Central Asiatic Expeditions (1921-1930)