Report - Keynote Presentation - bouldereconomiccouncil.orgbouldereconomiccouncil.org/wp-content/uploads/rich... · -6.0-4.0-2.0. 0.0. 2.0. 4.0. 6.0. 8.0. 10.0. 1990. 1992. 1994. 1996. 1998.

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