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GH v. Wright. On the idea of logical truth (I). Societas Scientarum Fennica, Commentationes physico-mathematicae, vol. 14 no. 4. Helsingfors1948, 20 pp.-GH von Wright. Form and content in logic. An inaugural lecture delivered on 26 May 1949 in the University of Cambridge. University Press, Cambridge1949, 35 pp.