000 00317nam a2200133Ia 4500
008 160930s9999 xx 000 0 und d
020 _a8174503420
100 _aBhattacharyya, P.K.
245 _ateachnology and Children
250 _a1st
260 _aNew Delhi
_bNCERT
_c2004
300 _aiii,73p.24cm
942 _cBK
999 _c5952
_d5952