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Lewin, B. D. (1932) Human Speech. Some Observations, Experiments and Conclusions as to the Nature, Origin, Purpose and Possible Improvement of Human Speech.: By Sir Richard Paget, Fellow of the Physical Society of London, Fellow of the Institute of Physics. The International Library of Psychology, Philosophy and Scientific Method. New York: Harcourt, Brace and Company. 1930. 360 p.. Psychoanalytic Quarterly 1:350-355