REMOTE DOWNLOAD NOT AVAILABLE - please contact data@library.columbia.edu for access. Tianjin Administrative Boundaries, Coast Lines and Islands (China 2000 Census) is a polyline theme representing administrative boundaries (country, provinces), coastlines, and islands in Tianjin for the year 2000. This data layer is part of the China 2000 Township Census data set produced by the All China Marketing Research Co. and distributed by the University of Michigan, China Data Center.