Contributions to the geology of northern Mongolia. Bulletin of the AMNH ; v. 67, article 7
By: Beckwith, Radcliffe Harold, 1900- - Central Asiatic Expeditions - Krasheninnikov, Ippolit Mikhailovich, 1884-1947. - Kupletskii, B. M. (Boris Mikhailovich), 1894-1965. - Lebedeva, Z. A. (Zinaida Aleksandrovna) - Polynov, B. B. (Boris Borisov