Columbia subject headings:
Harvard subject headings:
Technology--China--History--19th century.
Technology--China--History--20th century
Technology--Japan--History--19th century.
Technology--Japan--History--20th century.
Princeton subject headings:
Technology--China--History--19th century.
Technology--China--History--20th century.
Technology--Japan--History--19th century.
Technology--Japan--History--20th century.