Logic in 1971

The Idea of Principle in Leibnitz and the Evolution of Deductive Theory by Ortega y. Gasset, Jose

The Phenomenological Movement: A Historical Introduction by Spiegelberg, Herbert

Set Theory and Its Logic: Revised Edition by Quine, Willard Van Orman

Logische Schriften: Grosses Logikfragment -- Grundgesetze Des Sollens by Weingartner, P., Mally, E., Wolf, K.

Objects of Thought by Prior, A. N.

The Logic of Analogy: An Interpretation of St Thomas by McInerny, R. M.

Statistical Explanation and Statistical Relevance by Salmon, Wesley C.

Explanation and Understanding by Von Wright, Georg Henrik

Problems of Analysis: Philosophical Essays by Black, Max, Unknown

Logical Writings by Herbrand, J.

Logik-Texte: Kommentierte Auswahl Zur Geschichte Der Modernen Logik by Berka, Karel, Kreiser, Lothar