Columbia subject headings:
History.
Ludwig I, King of Bavaria, 1786-1868--Knowledge and learning.
Ludwig I, King of Bavaria, 1786-1868.
Harvard subject headings:
Ludwig I, King of Bavaria, 1786-1868--Knowledge--History.
Ludwig I, King of Bavaria, 1786-1868--Views on history.
Princeton subject headings:
Ludwig I, King of Bavaria, 1786-1868--Knowledge--History.
Ludwig I, King of Bavaria, 1786-1868--Views on history.