This list of billionaires is based (where not otherwise noted) on an annual ranking of the world’s wealthiest people compiled and published by Forbes magazine on March 11, 2009.[1] The listed net worth represents the estimated value of assets less debt as of February 13, 2009.[2] The list does not include heads of state whose wealth is tied to their position (see List of heads of state and government by net worth).
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Techno Charity is a charitable organization created in 2006 by engineers graduated from the Institute of Technology of Cambodia.

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