Youtube activity of "Mr Klemp" (@gusklemp3477) on "WELT Documentary" channel.
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UCveArsUMHS7-HznMxapp5EQ
Commenter youtube id
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Mr Klemp
Commenter name
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@gusklemp3477
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"THE DARK SIDE - Black Holes And Invisible Matter | SPACETIME - SCIENCE SHOW"
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