Glacial Area Changes in the Ili River Catchment (Northeastern Tian Shan) in Xinjiang, China, from the 1960s to 2009

Table 1

Topographic maps list for the study area.

Sources	Year	Quantity
1 : 50,000; topographic maps	1959	2
	1962	2
	1964	12
	1966	2
1 : 100,000; topographic maps	1959	2
	1962	2
	1964	1
	1966	3
	1968	1