Michigan copper and Boston dollars ; an economic history of the Michigan copper mining industry. by Gates, William Bryan 1917-

Development of copper industry cluster in Leyte pushed. IN Business News.

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Gov't kicks off copper industry dev't plan in Leyte. IN Business by Cahiles-Magkilat, Bernie

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Trends of Philippine copper industry statistics by Liao, Kong Siong 1947-

Cognitive consistency in an environmental dispute the copper smelter issue in Batangas by Moran, Antonio Garcia

NDC interested in copper industry. IN Business News. by Cahiles-Magkilat, Bernie

A simulation model for copper by Lejano, Florie M. 1958-

The cost curves of the Philippine copper industry measurement and applications by Lapuz, Roque F.

Economic evaluation of the copper smelting and refining plant by Esteban, Ma. Belen

The copper industry a preliminary analysis by Dy, Rolando T.