Ever try: Empires of the Silk Road: A History of Central Eurasia from the Bronze Age to the Present
by Christopher I. Beckwith ?
or
Bactria: The History of a Forgotten Empire by H.G. Rawlinson (it's old and you can get a free version of Gutenburg library)
by Christopher I. Beckwith ?
or
Bactria: The History of a Forgotten Empire by H.G. Rawlinson (it's old and you can get a free version of Gutenburg library)