Columbia subject headings:
Astronomy, Chinese.
Calendar, Chinese.
Galilei, Galileo, 1564-1642.
Jesuits--China--History--17th century.
Jesuits--China--History.
Harvard subject headings:
Astronomy, Chinese
Calendar, Chinese.
Galilei, Galileo, 1564-1642
Jesuits--China.
Princeton subject headings:
Astronomy, Chinese.
Calendar, Chinese.
Galilei, Galileo, 1564-1642.
Jesuits--China--History--17th century.