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Rudolf Haller, Johannes L Brandl (1990) Wittgenstein — eine neubewertung/Wittgenstein — towards a re-evaluation: Akten des 14. internationalen Wittgenstein-symposiums feier des 100. geburtstages 13. bis 20. august 1989 kirchberg am wechsel (Österreich) / proceedings of the 14th international Wittgenstein-symposium centenary celebration 13th to 20th au, Dordrecht, Springer.
Necessary identity and necessary existence
Timothy Williamson
pp. 168-175
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