Citation

Japan Rikuchi Sokuryōbu. Japan 陸地測量部. Japan Tōa Kenkyūjo. Japan 東亞研究所. Japan Rikugun Sanbō Honbu. Japan 陸軍 参謀本部. (1942). [Nihyakugojūmanbun no ichi "So" ryō yochizu. [JPEG 2000]. Retrieved from https://earthworks.stanford.edu/catalog/stanford-by499bp3847