Spock, Leslie Erskine, 1900-Central Asiatic Expeditions (1921-1930)2005-10-062005-10-061930http://hdl.handle.net/2246/44058 p. : ill., map ; 23 cm.Includes bibliographical references.728023 bytesapplication/pdfen-USQL1 .A436 no.407, 1930Formations (Geology) -- Gobi Desert (Mongolia and China)Geology, Stratigraphic -- Mesozoic -- Gobi Desert (Mongolia and China)Geology, Stratigraphic -- Cenozoic -- Gobi Desert (Mongolia and China)Geology -- Gobi Desert (Mongolia and China)New Mesozoic and Cenozoic formations encountered by the Central Asiatic Expeditions in 1928. American Museum novitates ; no. 407text