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Conflict diamonds : agency actions needed to enhance implementation of the clean diamond trade act ; report to Congressional committes
(2006)
Conflict diamonds : hearing before the Subcommittee on Trade of the Committee on Ways and Means, House of Representatives, One Hundred Seventh Congress, first session, October 10, 2001
(2001)
Trade in African diamonds : hearing before the Subcommittee on Trade of the Committee on Ways and Means, House of Representatives, One Hundred Sixth Congress, second session, September 13, 2000
(2000)