Frei Otto: Spanning the Future - GERMAN Subtitles
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FREI OTTO: SPANNING THE FUTURE
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Frei Otto: Spanning the Future - ENGLISH Subtitles
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Frei Otto: Spanning the Future - SPANISH Subtitles
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Ondas gravitacionales, Dr. Miguel Alcubierre Moya, Instituto de Ciencias Nucleares - UNAM
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