Walter Zentgraf

Walter Zentgraf é engenheiro civil pela UFRJ, administrador de empresas e tem curso de especialização em Engenharia Económica. É consultor e instrutor de programas de treinamento na área financeira nas principais cidades do Brasil e também autor de Calculadora Financeira HP- 12C e Programação na Calculadora Financeira HP- 12C, ambos publicados pela Atlas.

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