Rikuchi Sokuryōbu seihan, Sanbō Honbu chōsei. 陸地測量部製版, 参謀本部調製. Relief shown by contours and spot heights. Original map, on which military information was superimposed, made 1924-1925 based on American map. 1924 map has title: Nijūmanbun no ichi zu Rusontō kinbō. Index to adjoining sheets in margins. In Japanese; major place names in English.
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