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1Annals
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2Book
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3Textbook
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4Textbook
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5Textbook
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6Book
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7Textbook
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8Textbook
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9Textbook
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10Textbook
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11
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12Textbook
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13Textbook
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14Textbook
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15Textbook
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16Textbook
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17Textbook
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18Textbook
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19Textbook
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20Textbook