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매일경제 TV (Ch20) 매일경제 TV (Ch20), 2001,
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AMERICAN SOCIETY OF CIVIL ENGINEERS AMERICAN SOCIETY OF CIVIL ENGINEERS, 2013,
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AMERICAN SOCIETY OF CIVIL ENGINEERS AMERICAN SOCIETY OF CIVIL ENGINEERS, 2012,
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AMERICAN SOCIETY OF CIVIL ENGINEERS AMERICAN SOCIETY OF CIVIL ENGINEERS, 2011,
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AMERICAN SOCIETY OF CIVIL ENGINEERS AMERICAN SOCIETY OF CIVIL ENGINEERS, 2010,
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AMERICAN SOCIETY OF CIVIL ENGINEERS AMERICAN SOCIETY OF CIVIL ENGINEERS, 2009,
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