Agustin Gonzalez Ruiz, Fc Editorial

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Werther - Davis - Guzman, Mcgraw Hill

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Tolo M. Rimsky, Mcgraw Hill

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John W. Newstrom, Mcgraw Hill

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Idalberto Chiavenato, Mcgraw Hill

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M. Cejas - N. Chirinos, Universidad de Carabobo

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Agustin Reyes Ponce, Limusa

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Idalberto Chiavenato, Mcgraw Hill

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