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Logik

A Contribution to Some Problems of Logic and Metaphysics

Grosses Logikfragment — Grundgesetze des Sollens

Part Two of the Proceedings of the Fifth International Congress of Logic, Methodology and Philosophy of Science, London, Ontario, Canada-1975

Inductive Logic as a Theory of Justification

Volume II: Extensions of Classical Logic

Contributions to Philosophy

Explorations in the Philosophical Work of Saul Kripke

A Study in the History and Philosophy of Mathematics