"Polyconic projection." Military grid. Issued in 1⁰ quadrangles numbered according to the system used for the International 1/m map of the world. "Relief shown by form lines." "Chinese place names are transcribed according to the modified Wade-Giles system." Three classes of roads or trails, and three types of internal boundaries are shown. Co-ordinated for use with the following sets, covering adjoining areas: China proper, NE 1:250,000 A. M. S. L531; China proper, SE 1:250,000 A. M. S. L581; China proper, SW 1:250,000 A. M. S. L582. Marginal diagram: Index to adjoining sheets.
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