User contributions
- 20:47, 21 October 2016 (diff | hist) . . (-223) . . Math books (→Olympiad)
- 20:47, 21 October 2016 (diff | hist) . . (-140) . . Math books (→Intermediate)
- 20:47, 21 October 2016 (diff | hist) . . (+223) . . Math books (→Algebra)
- 20:44, 21 October 2016 (diff | hist) . . (+140) . . m Math books (→Intermediate)