Ramon V. Melinkoff, Panapo

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Juan Rafael Perdomo, Libreria J. Rincon

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D. Cline - O. Ma -, Mcgraw Hill

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Gaceta N. 6.667, Ml, C.a.

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Walter Riso, Planeta

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M. Menendez - C. Schmidt, Richmond

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Stanley L. Grossman, Mcgraw Hill

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T. Phillips - A. Phillips, Garnet

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A. Mclennan - A. Bates, Mcgraw Hill

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Dr. Ing. Harry Osers, Refolit C.a.

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Varios, los Angeles Editores

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Gaceta Nº 5.453, Agr

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Juan Garay, Agr

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Gaceta Nº 39.627, R Graficas 2021

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Gaceta Nº 39.156, Njr

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Dornbusch / Fischer, Mcgraw Hill

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Robert W. Schrier, Lippincott

$80.70

Dale Carnegie, Debolsillo

$18.00

Roberto Briceño Leon-olga, Alfa

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I. Zabalza - E. Llera, Fc Editorial

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Edward de Bono, Granica

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Gaceta No. 5.870, Njr

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Jorge Enrique Mora, Planeta

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Carlos J. Galan Gutierrez, Fc Editorial

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Owen - Punt - Stranford, Mcgraw Hill

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Gaceta Nº 40.142, Njr

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Magaly Perretti de Parad, Alvaro Nora

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Luis Miguel Avila Merino, Ucab

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Spiegel, Mcgraw Hill

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Jesus Alirio Silva, Co-bo

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