Columbia subject headings:
Nietzsche, Friedrich Wilhelm, 1844-1900.
Voltaire, 1694-1778--Influence.
Harvard subject headings:
Nietzsche, Friedrich Wilhelm, 1844-1900
Nietzsche, Friedrich Wilhelm, 1844-1900--Criticism and interpretation.
Voltaire, 1694-1778--Influence.
Princeton subject headings:
Nietzsche, Friedrich Wilhelm, 1844-1900.
Voltaire, 1694-1778--Influence.