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Book Reviews Get access An Essay in Modal Logic. By Georg H. von Wright. (Studies in Logic and the Foundations of Mathematics. Amsterdam: North-Holland Publishing Company. 1951. Pp. viii + 90. Price Fl.9). G. P. Henderson G. P. Henderson Search for other works by this author on: Oxford Academic Google Scholar The Philosophical Quarterly, Volume 3, Issue 12, July 1953, Page 287, https://doi.org/10.2307/2216596 Published: 01 July 1953
Henderson et al. (Wed,) studied this question.