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Since 1870, there have been several formal attempts to restrict the copper output and raise, in this form, its price.
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Herfindahl, O. (1959) Copper costs and prices: 1870–1957, RFF, Baltimore.
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Intergovernmental
Council of Copper Exporting Countries
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88:but its sources remain unclear because it lacks
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42:, ICC, 1935–1939 (created by the
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40:International Copper Cartel
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28:Copper Export Association
19:This is a list of copper
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44:World Copper Agreement
34:Copper Exporters, Inc.
23:in the 20th century:
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52:, CIPEC, 1967–1988
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95:Please help
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101:introducing
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109:June 2016
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