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Gloucester, Mass.: Smith, 1963
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JSTOR, 1943
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Payne Educational Sociology Foundation, Inc., 1943
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JSTOR, 1943
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JSTOR, 1944
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The American Association of Teachers of Spanish, 1944
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University of California Press, 1939
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Informa UK Limited, 1940
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University of California Press, 1934
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JSTOR, 1934
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JSTOR, 1953
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SAGE Publications, 1942
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JSTOR, 1945
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JSTOR, 1946
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Oxford University Press (OUP), 1946
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JSTOR, 1944
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Oxford University Press (OUP), 1941
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JSTOR, 1942
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JSTOR, 1946
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Oxford University Press (OUP), 1951