Relief shown by shading. Each sheet includes index to adjoining sheets. Various issues of some sheets. Covers East Mongolia, East China, East Siberia and North Korea. Some sheets are 1947 reprints by Kyodo Printing Co. Ltd. In Japanese. Gaihōzu. Wright Collection (?). Dai Nihon Teikoku Rikuchi Sokuryōbu. 大日本帝國測量部.