by F. Bergman ... [et al.] ; compiled by E. Norin. -- Sven Hedin Foundation, 1980. -- (Reports from the Scientific Expedition to the North-Western Provinces of China under the leadership of Dr. Sven Hedin : the Sino-Swedish Expedition ; publication 50 ; I ; Geography ; 3 [i.e. 4] . Sven Hedin Central Asia atlas : memoir on maps ; v. 3, fasc. 3).