000 00324nam a2200145Ia 4500
020 _a8172450907
082 _b.101
_a420
100 _a"Sethi, M. R."
245 0 _a250 Challenging Puzzles
260 _aNew Delhi
_c1993
300 _a178
944 _cTR
999 _c388074
_d388074