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All videos by VertikalDesign: Download and Watch Online
04:08
Mechanical Principles (1930) by Ralph Steiner [4min selection]
![Mechanical Principles (1930) by Ralph Steiner [4min selection]](https://videodownloadbot.com/images/video/b2c/0836mdbmyoibg3ji5jrfi93qcgdktet5_medium.jpeg)