Matches in DBpedia 2015-10 for { ?s ?p "Since 1870, there have been several formal attempts to restrict the copper output and raise, in this form, its price. This is a list of copper cartels in the 20th century: Copper Export Association, CEA, 1918–1923 Copper Exporters, Inc., CEI, 1926–1932 International Copper Cartel, ICC, 1935-1939 (Also called World Copper Agreement) Intergovernmental Council of Copper Exporting Countries, CIPEC, 1967–1988"@en }
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- Copper_cartels abstract "Since 1870, there have been several formal attempts to restrict the copper output and raise, in this form, its price. This is a list of copper cartels in the 20th century: Copper Export Association, CEA, 1918–1923 Copper Exporters, Inc., CEI, 1926–1932 International Copper Cartel, ICC, 1935-1939 (Also called World Copper Agreement) Intergovernmental Council of Copper Exporting Countries, CIPEC, 1967–1988".
- Copper_cartels comment "Since 1870, there have been several formal attempts to restrict the copper output and raise, in this form, its price. This is a list of copper cartels in the 20th century: Copper Export Association, CEA, 1918–1923 Copper Exporters, Inc., CEI, 1926–1932 International Copper Cartel, ICC, 1935-1939 (Also called World Copper Agreement) Intergovernmental Council of Copper Exporting Countries, CIPEC, 1967–1988".