APA (7th ed.) Citation

(1949). Vol. 44, № 5-6; Economic Geology. 1949.

Chicago Style (17th ed.) Citation

Vol. 44, № 5-6; Economic Geology. 1949, 1949.

MLA (9th ed.) Citation

Vol. 44, № 5-6; Economic Geology. 1949, 1949.

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