(1904). Vol. 33, № 1-6, Vol. 34, № 1-6; American Geologist. 1904.
Chicago Style (17th ed.) CitationVol. 33, № 1-6, Vol. 34, № 1-6; American Geologist. 1904, 1904.
MLA (9th ed.) CitationVol. 33, № 1-6, Vol. 34, № 1-6; American Geologist. 1904, 1904.
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