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The record of copper prices, U.S.A.
Shirk, Gertrude - In: Cycles : official bulletin of the Foundation for the … 25 (1974) 5, pp. 106-107
Persistent link: https://www.econbiz.de/10002810668
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Historical survey : copper prices 1784-1982
Williams, David - In: Cycles : official bulletin of the Foundation for the … 34 (1983) 3, pp. 71-78
Persistent link: https://www.econbiz.de/10003006844
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Possible cycles in copper prices, 1796-1973
Dewey, Edward R. - In: Cycles : official bulletin of the Foundation for the … 25 (1974) 5, pp. 102-105
Persistent link: https://www.econbiz.de/10002056090