Burchfield, J. D. (1990). Lord Kelvin and the age of the earth (University of Chicago Press ed.). University of Chicago Press.
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Tohutoru Kātū Chicago (17th ed.)
Burchfield, Joe D. Lord Kelvin and the Age of the Earth. University of Chicago Press ed. Chicago: University of Chicago Press, 1990.
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Tohutoro MLA (9th ed.)
Burchfield, Joe D. Lord Kelvin and the Age of the Earth. University of Chicago Press ed. University of Chicago Press, 1990.
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Kua rahua te tārua ki te papatopenga
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