000 00333nam a2200145Ia 4500
100 _aYaglom/A.M
490 _v1
942 _cBK
654 _amathematical
245 _aChallenging mathematical problem with elementary solutions
260 _bDover
_aNew York
_c1987
082 _a511.6
_bYAG
300 _a231
546 _aENGLISH
999 _c21576
_d21576