Description :
A clip in the Science Please! collection, Operation Lever uses archival footage, animated illustrations and amusing narration to explain how a lever increases force. Science Please! : Operation Lever
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Science Please! : Operation Lever en vérsion HD et DVDrip . 1.2 GB HTML5
Science Please! : Operation Lever en vérsion HD et DVDrip. 1.4 MB mp4
Voir Science Please! : Operation Lever streaming avec VLC media player. .m3u8
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