Columbia subject headings:
Harvard subject headings:
Astronomers--Germany--Exhibitions.
Astronomy--History--19th century--Exhibitions.
Beer, Wilhelm, 1797-1850--Exhibitions.
Economists--Germany--Exhibitions.
Princeton subject headings:
Astronomers--Germany--Biography.
Astronomy--Germany--History.
Beer, Wilhelm, 1797-1850--Exhibitions.
Staatsbibliothek zu Berlin--Preussischer Kulturbesitz--Catalogs.