000 00311nam a22001217a 4500
003 OSt
008 161102b xxu||||| |||| 00| 0 eng d
110 _aNCERT
_9584
245 _aFourth Indian Year Book of Education : Secondary Education
260 _aNew Delhi
_bNCERT
_c1973
300 _a529p
942 _2ddc
_cNCERT
999 _c2178
_d2178