Columbia subject headings:
Harvard subject headings:
Aeronautics--Germany--Ulm--Biography.
Aeronautics--Germany--Ulm--History.
Berblinger, Albrecht Ludwig, 1770-1829.
Rüb, Ludwig.
Princeton subject headings:
Aeronautics--Germany--Ulm--History.
Berblinger, Albrecht Ludwig, 1770-1829.
Flight--History.
Rüb, Martin Ludwig, 1863-1918.