No. 21-22 (1994)
Published: 1994-05-11
Scientific articles
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5-161994-05-08Juan Manuel López, Julia Gutiérrez de Piñeres, Nora Choperena
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17-181994-05-08Wilken Rodríguez Escobar
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24-331994-05-08Juan Bautista Franco Clavijo
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34-411994-05-08Luis Gerardo Rodríguez Gómez
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42-461994-05-08Edison Ospina Norato
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Orlando Salinas Gómez
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54-601994-05-08Delfin Soto