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1Livre
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2Livre
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3Harvard University Press 1959Livre
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4Harvard University Press 1959Livre
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5American Academy of Arts and Sciences 1945Livre
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6the American Academy of arts and sciences 1935Livre
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7The American Academy of Arts and Sciences 1934Livre
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8The American Academy of Arts and Sciences 1934Livre
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9the American Academy of arts and sciences 1936Livre
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10the American Academy of arts and sciences 1936Livre
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11the American Academy of arts and sciences 1935Livre