000 00298nam a22001217a 4500
020 _a9788123720548
082 _a371.3078
_bDAS
100 _aDasgupta, Mary Ann
245 _aLow-Cost, No-Cost Teaching aids
260 _aNew Delhi
_bNational book Trust
_c2007
300 _avii, 145 p.
942 _cBK
999 _c43345
_d43345