Logic in 1971

The Phenomenological Movement: A Historical Introduction by Spiegelberg, Herbert

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

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

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

Objects of Thought by Prior, A. N., Prior, Arthur 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 Unknown, Black, Max

Logical Writings by Herbrand, J.