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16-08-10
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27-07-10
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12-07-10
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31-05-10
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20-03-10
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18-01-10
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09-03-09
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18-12-08
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24-06-08
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30-05-08
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30-04-08
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07-04-08
Marco Antonio Chagas
doutorando UNIFAP/UFPA-NAEA
(marco.chagas@uol.com.br)