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2. Borst, C. V. (ed.): 1970, The Mind-Brain Identity Theory, Macmillan, London.
3. Braithwaite, R. B.: 1953, Scientific Explanation, Cambridge University Press, Cambridge, England.
4. Dilthey, W.: 1962, Meaning in History, H. P. Rickman, (trans. and ed.), New York.
5. Rorty, R.: forthcoming, ?Mind as Ineffable?, in R. Q. Elvee (ed.), Mind and Nature, Harper & Row, San Francisco.