Vargas Pérez, Pedro, Universidad de Costa Rica, Costa Rica
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InterSedes Vol. 5 No. 8 (2003) Articles (Peer-reviewed/refereed)
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InterSedes Vol. 4 No. 7 (2003) Articles (Peer-reviewed/refereed)
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InterSedes Vol. 6 No. 11 (2005) Articles (Peer-reviewed/refereed)