No. 19-20 (1993)
Published: 1993-05-11
Scientific articles
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Delfin Soto Chaves
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Enrique Montes Uribe
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26-291993-05-11Lilia Cañon Fl
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30-331993-05-11Wilken Rodríguez Escobar, Reynaldo José González
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34-411993-05-11María Elena Angulo, Luisa Carlota Santana
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42-461993-05-11Lilia Cañon Flórez
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47-531993-05-11Johnny Alvarez Jaramillo, Sandra Ximena Díaz, Regina Vidal, Juan Carlos Lobo
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54-571993-05-11Orlando Salinas Gómez
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