Columbia subject headings:
Harvard subject headings:
Astronomical instruments.
Astronomy, Chinese
Scientists--China--Biography
Su, Song, 1020-1101
Su, Song, 1020-1101. Xin yi xiang fa yao
Princeton subject headings:
Astronomical instruments.
Astronomy, Chinese.
Scientists--China--Biography.
Su, Song, 1020-1101.
Su, Song, 1020-1101. Xin yi xiang fa yao.