Columbia subject headings:
Plato. Parmenides.
Reasoning.
Socrates.
Zeno, of Elea.
Harvard subject headings:
Plato. Parmenides.
Reasoning.
Socrates.
Zeno, of Elea.
Princeton subject headings:
Plato. Parmenides.
Reasoning.
Socrates.
Zeno, of Elea