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Vaduz: Kraus Repr., 1965
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SAGE Publications, 1963
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Wiley, 1957
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SAGE Publications, 1953
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SAGE Publications, 1950
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Cambridge University Press (CUP), 1948
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SAGE Publications, 1948
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SAGE Publications, 1948
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SAGE Publications, 1948
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SAGE Publications, 1944
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University of Chicago Press, 1943
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University of Chicago Press, 1943
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SAGE Publications, 1943
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SAGE Publications, 1942
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SAGE Publications, 1942
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Cambridge University Press (CUP), 1939
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University of Chicago Press, 1941
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University of Chicago Press, 1939
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SAGE Publications, 1941
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Cambridge University Press (CUP), 1942