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“The Expanding Universe.” How Old Is the Universe?, by DAVID A. WEINTRAUB, Princeton University Press, PRINCETON; OXFORD, 2011, pp. 217–234, Accessed 9 Aug. 2020.
WEINTRAUB, D. (2011). The Expanding Universe. In How Old Is the Universe? (pp. 217-234). PRINCETON; OXFORD: Princeton University Press. Retrieved August 9, 2020, from
WEINTRAUB, DAVID A. "The Expanding Universe." In How Old Is the Universe?, 217-34. PRINCETON; OXFORD: Princeton University Press, 2011. Accessed August 9, 2020.

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