000 00306nam a2200109Ia 4500
008 220510s2007 xx 000 0 und d
041 _aeng
082 _a371.3
_bDAS
100 _aDas Gupta, Mary Ann.,
_9774726
245 _aLow Cost, No cost teaching Aids
260 _aNew Delhi:
_bNational Book trust,
_c2007
999 _c524934
_d524934