000 00362nam a2200145Ia 4500
003 NIELib
008 211019s9999||||xx |||||||||||||| ||und||
082 _a372.7
_bDEV
100 _aDevi, S.
245 _aCandid mental mathematics
260 _bEvergreen pub
_c1992
_aNew Delhi
650 _aPrimary Education
650 _aMathematics
942 _2ddc
_cLM
999 _c5633
_d5633