v.39, n.4, p.1227-1230, jul, 2009
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Main Authors: | , , , , , , , |
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Format: | Digital revista |
Language: | Portuguese |
Published: |
Universidade Federal de Santa Maria
2010
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000900031 |
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