Philosophical explorations
Southern Illinois University Press
Robert S. Brumbaugh ; foreword by George Kimball Plochmann
Southern Illinois University Press c1992 Philosophical explorations
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Carlos G. Noreña ; foreword by George Kimball Plochmann
Southern Illinois University Press c1989 Philosophical explorations
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[by] Robert S. Hartman ; foreword by George Kimball Plochmann ; preface by Paul Weiss
Southern Illinois University Press [1967] Philosophical explorations
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Robert Sternfeld ; foreword by George Kimball Plochmann
Southern Illinois University Press c1966 Philosophical explorations
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