Columbia subject headings:
Harvard subject headings:
Bacon, Francis, 1561-1626
Philosophers--France--Biography
Philosophers--Great Britain--Biography
Philosophy, Modern--17th century.
Philosophy, Modern--18th century.
Voltaire, 1694-1778
Princeton subject headings:
Bacon, Francis, 1561-1626.
Philosophers--France--Biography.
Philosophers--Great Britain--Biography.
Philosophy, Modern--17th century.
Philosophy, Modern--18th century.
Voltaire, 1694-1778.