Columbia subject headings:
Hydrographic surveying--Japan--History--20th century.
Hydrography--Japan--History--20th century.
Japan. Kaigunshō. Suirobu--History--20th century.
Harvard subject headings:
Hydrographic surveying--Japan--History.
Hydrography--Japan--History.
Japan. Kaigunshō. Suirobu--History.
Princeton subject headings:
Hydrographic surveying--Japan--History.
Hydrography--Japan--History.
Japan. Kaigunshō. Suirobu--History.