American Center for Mongolian Studies Library Online Search for 'se,phr:"Cambridge studies in Islamic civilization" and au:Allsen, Thomas T.'

Commodity and exchange in the Mongol Empire :

By Allsen, Thomas T.. Cambridge ; | New York : Cambridge University Press, 1997 . xv, 137 p. ; 24 cm.. 0521583012 (hardback)

By Allsen, Thomas T.. Cambridge, UK ; | New York, NY, USA : Cambridge University Press, 2001 . xiii, 245 p. ; 24 cm.. 0521803357