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|a spa
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|a 383.497284
|b C822a
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|a Corpeño Cisneros, Alvaro Enrique
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| 245 |
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|a Una Alternativa para el manejo y distribución de correspondencia en El Salvador
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| 260 |
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|a San Salvador :
|b Universidad Centroamericana "José Simeón Cañas",
|c 1985
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| 300 |
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|a 139 h.
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| 502 |
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|a Tesis (Ing. Industrial) -- Universidad Centroamericana "José Simeón Cañas".
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|a CORRESPONDENCIA
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