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Dinámica concreta del desarrollo by Lebret, Louis Joseph, 1897-1966 | Borel, Paul [colab.] | Delprat, Raymond [colab.] | Albertini, J. M [colab.]. Material type:  Text Language: Spanish Publisher: Barcelona : Herder, 1966Availability: Items available for loan: Biblioteca Central UNNECall number: 338.9 L452 ej.1 (1).
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Etica y desarrollo by Lebret, Louis Joseph, 1897-1966 | Colin, R | Castro Nevares, María Matilde [tr.]. Material type: Text Language: Spanish Publisher: Buenos Aires : Latinoamérica Libros, 1966Availability: Items available for loan: Biblioteca Central UNNECall number: 338.984 L452 ej.1 (1).
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