Autor: Neculai stanciu, 1 titlu

Olympiad Problems from all over the World. 9th Grade Content (lb. engleza) - Dumitru M. Batinetu-Giurgiu, Marin Chirciu, Daniel Sitaru, Neculai Stanci

Dumitru M. Batinetu Giurgiu,Marin Chirciu,Daniel Sitaru,Neculai Stanciu,Octavian Stroe