Columbia subject headings:
Harvard subject headings:
Astronomers--Belgium--Biography--Congresses.
Astronomy--China--History--17th century--Congresses.
Diplomats--Belgium--Biography--Congresses.
Engineers--Belgium--Biography--Congresses.
Jesuits--China--History--17th century--Congresses.
Technology--China--History--17th century--Congresses.
Verbiest, Ferdinand, 1623-1688--Congresses.
Princeton subject headings:
Astronomers--Belgium--Biography--Congresses.
Astronomy--China--History--17th century--Congresses.
Diplomats--Belgium--Biography--Congresses.
Engineers--Belgium--Biography--Congresses.
Jesuits--China--History--17th century--Congresses.
Technology--China--History--17th century--Congresses.
Verbiest, Ferdinand, 1623-1688--Congresses.