Relief shown by interval 5 metres accentuated every 25 m. Depth shown by isolines. Three classes of roads and tracks are shown; some streets and buildings are named. Map show the low -hiigh levels of the Yangtze River "Grid no. 2." In upper margin: China 1:25,000 ; Grid no. 2. Great Britain. War Office. General Staff. Geographical Section. G.S.G.S. no. 3831. Relif shown by 5 m. contour interval. Depth shown by 5 m. contour interval. Series: China 1:25,000. In upper margin: 1:25,000; grid no. 2.