User contributions
- 12:43, 13 February 2014 (diff | hist) . . (+64) . . User:Marcin4646 (current)
- 12:41, 13 February 2014 (diff | hist) . . (0) . . File:Hour of code certificate.jpg (Marcin4646 uploaded a new version of "File:Hour of code certificate.jpg") (current)
- 12:41, 13 February 2014 (diff | hist) . . (0) . . N File:Hour of code certificate.jpg
- 12:40, 13 February 2014 (diff | hist) . . (-284) . . User:Marcin4646