吐火罗语
The British Library's Stein collection of Chinese, Tibetan and Tangut manuscripts, Prakrit wooden tablets, and documents in Khotanese, Uyghur, Sogdian and Eastern Turkic is the result of his travels through central Asia during the 1920s and 1930s. Stein discovered manuscripts in the previously lost Tocharian languages of the Tarim Basin at Miran and other oasis towns, and recorded numerous archaeological sites especially in Iran and Balochistan.