Dyfyniad APA

Bowen, R. (1977). Copper: Its geology and economics. Applied Science Publishers.

Dyfyniad Arddull Chicago

Bowen, Robert. Copper: Its Geology and Economics. London: Applied Science Publishers, 1977.

Dyfyniad MLA

Bowen, Robert. Copper: Its Geology and Economics. Applied Science Publishers, 1977.

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