Columbia subject headings:
Astronomers--Biography.
Astronomy--History.
Brahe, Tycho, 1546-1601.
Copernicus, Nicolaus, 1473-1543.
Peurbach, Georg von, 1423-1461.
Regiomontanus, Joannes, 1436-1476.
Harvard subject headings:
Astronomers--Biography
Brahe, Tycho, 1546-1601.
Copernicus, Nicolaus, 1473-1543.
Peurbach, Georg von, 1423-1461.
Regiomontanus, Joannes, 1436-1476.
Princeton subject headings: