Παραπομπή APA

(1906). Economic Geology and the Bulletin of the Society of Economic Geologists. El Paso, TX: Economic Publishing Co..

Παραπομπή Chicago Style

Economic Geology and the Bulletin of the Society of Economic Geologists. El Paso, TX: Economic Publishing Co., 1906.

Παραπομπή MLA

Economic Geology and the Bulletin of the Society of Economic Geologists. El Paso, TX: Economic Publishing Co., 1906.

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