Rikuchi Sokuryōbu seihan. 陸地測量部製版. Place names in Japanese and Russian. Relief shown by contours, form lines, gradient tints, and spot heights. Sheets use 2 different numbering systems. Sheets individually subtitled and numbered, e.g. "Oha","Higashi dai 4-gyō Kita dai 12-dan." Sheets individually subtitled and numbered, e.g. "Katanguri","8ta501." Confidential "Gunji Gokuhi", "Gunji Himitsu", or "Hi atsukai, Toriatsukaini chūishi yōzumigo shōkyaku" printed on upper right margin. Relief shown by contours and spot heights. Some sheets overprinted with military information. Sheets individually subtitled and numbered, e.g. "オハ","東第四行北第十二段." Sheets individually subtitled and numbered, e.g. "カタングリ","八タ五〇一." Confidential "軍事極祕", "軍事秘密", or "秘扱 取扱ニ注意シ用濟後焼却" printed on upper right margin. In Japanese; some sheets also have place names in Russian.