000 00277nam a22001217a 4500
999 _c1737
_d1737
003 OSt
008 121228b xxu||||| |||| 00| 0 eng d
100 _aKrishna Kumar
110 _aNCERT
_9584
245 _aFour Educational Riddles
260 _aNew Delhi
_bNCERT
942 _2ddc
_cAV