@book{30456,
	author = {Chang, Chum},
	title = {travels of an Alchemist:  the Journey of the tuoist Cha'ang-Chun from Chinats the Hindu Kosh at the Summons of Chingiz Khan Recorded by his Disciple Li- Chih-Ch'ang},
	publisher = {Routledge & Kegan Paul},
	year = {1963},
	address = {London},
	note = { maps}
}