Gessmann, C., & Wood, B. (2002). Potassium in the Earth's core?
Lua i Stíl Chicago (17ú heag.)Gessmann, C., agus B. Wood. Potassium in the Earth's Core? 2002.
Lua MLA (9ú heag.)Gessmann, C., agus B. Wood. Potassium in the Earth's Core? 2002.
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