فيلم قصير...الوقت الجيولوجي
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المصادر: https://evolution.berkeley.edu/evolibrary/article/history_04 https://www.pnas.org/content/106/49/20641.full https://www…
المصادر: https://evolution.berkeley.edu/evolibrary/article/history_04 https://www.pnas.org/content/106/49/20641.full https://www…
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