Shklarsky, D. O. Chentzov, N. N.
The Ussr Olympiad Problem Book : Selected Problems And Theorems Of Elementary Mathematics - 3 - New York Dover Publications, Inc. 1993 - xvi;452 pb 5.5x8.5
0486277097
510.76 / Shk/Che
The Ussr Olympiad Problem Book : Selected Problems And Theorems Of Elementary Mathematics - 3 - New York Dover Publications, Inc. 1993 - xvi;452 pb 5.5x8.5
0486277097
510.76 / Shk/Che