Columbia subject headings:
Harvard subject headings:
Astronomers--Germany--Biography--Congresses.
Schickard, Wilhelm, 1592-1635--Congresses.
Princeton subject headings:
Astronomy--History.
Schickard, Wilhelm, 1592-1635.
Science--Germany--History--16th century.
Science--Germany--History--17th century.
Universität Tübingen.