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Walter H. Lewis, Ph.D.
last modified
September 05, 2008
Walter H. Lewis, Ph.D.
Walter H. Lewis, Ph.D., a professor emeritus at Washington University in St. Louis, Missouri, is an internationally known ethnobotanist who has made the importance of preserving the Latin American rain forest abundantly clear to publics worldwide. Among other important discoveries, he and his wife have discovered the plant with the world's highest concentration of caffeine through their visits to Amazonia.
