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Boulder, Colo.: Geological Soc. of America, 1934- ; New York, NY: Geological Soc. of America, 34.1949 / 1.1934 -
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Boulder, Colo.: GSA, 1934- ; New York, NY, teils / 1.1934 -
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Boulder, Colo. [u.a.]: Geological Society of America, 1890- / 1.1890 - 89.1978; 93.1982 -
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Boulder, Colo.: Soc., [2001?]- / Nachgewiesen 2001 -