1.
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Messaging infrastructure for Electronic Government: background, rationale, objectives Estevez, Elsa Clara - Janowski, Thomas - Fillottrani, Pablo Rubén
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2.
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Nineteen sixties history of data base management Olle, T. William
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3.
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Contributions to social security in Argentina, Chile and Uruguay: densities, transitions and duration Sanromán, Graciela - Rossi, Ianina - Grushka, Carlos - Fajnzylber, Eduardo - Apella, Ignacio - Forteza, Álvaro
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