usst.edu.cnlibrary.usst.edu.cn/_upload/article/files/78/47/74c597bc...known to the public,...
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usst.edu.cnlibrary.usst.edu.cn/_upload/article/files/78/47/74c597bc...known to the public, Rubik's Cube was used for scientific research and technology development by many scholars
![Eidswick 1982] Rubik's Cube Engagement Calendar 1982](https://img.pdfslide.us/doc/110x75/5523c4c24a7959505e8b4e3d/eidswick-1982-rubiks-cube-engagement-calendar-1982.jpg)
