About Crash Course Science results of 10,000
12:47
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12:52
10:44
09:04
12:57
10:08
11:50
10:26
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08:51
26:27
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11:27
09:43
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10:05
02:07
12:48
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10:54
09:19
09:29
13:08
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10:42
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12:19
15:27
11:34
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