User contributions for 174.226.0.99
1 May 2020
- 22:4022:40, 1 May 2020 diff hist +20‎ Chapter 1: The roots of science ‎ →‎Books
- 22:4022:40, 1 May 2020 diff hist +156‎ Chapter 1: The roots of science ‎ →‎Resources
- 19:3519:35, 1 May 2020 diff hist +65‎ 3 Kinds of numbers in the physical world ‎ →‎Books