Andreescu, Titu Feng, Zuming Eds.,
Mathematical Olympiads: Problems and solutions from around the world 1998-1999 - Wshington MAA 2000 - 290 - MAA problem books series .
0883858037
51 AND
Mathematical Olympiads: Problems and solutions from around the world 1998-1999 - Wshington MAA 2000 - 290 - MAA problem books series .
0883858037
51 AND