000 00326nam a2200133Ia 4500
700 _aKhan, R.S. (Ed)
100 _aRuhela, S.P.
020 _a81-86030-55-7
942 _cBK
654 _a
245 _aJoyful learning
_bIts foundations and implementation
260 _aNew Delhi
_bRegency Publications
_c1997
082 _a372
999 _c406650
_d406650
041 _aeng