Ball Bearings

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WhoTF thinks that ball bearings are not a keystone of entire civilization? Delete removed

The basis of modern civilization, including the basis for the GVCS, is ball bearings. See how they are made:

http://www.madehow.com/Volume-1/Ball-Bearing.html

Retrieved from "https://wiki.opensourceecology.org/index.php?title=Ball_Bearings&oldid=29576"

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