Recent investigations of intelligence and its measurement.
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Vernon
Eugen Rev. 1950 Jan;41(4):163-70
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Eugen Rev. 1950 Oct;42(3):136-48
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Eugen Rev. 1950 Jul;42(2):75-92
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Proc Natl Acad Sci U S A. 1938 Jul;24(7):276-82
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J Ment Sci. 1948 Jan;94(394):133-42
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Eugen Rev. 1949 Apr;41(1):17-27
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