000 00269nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aGoel, B.S.
245 2 _aA Study Of The Evolution Of The Text Book
260 _aNCERT
_bNCERT
_c1987
300 _a284p.
942 _cBK
999 _c14130
_d14130