000 00270nam a22001097a 4500
003 OSt
100 _aSingh, Hukum
245 _aA Handbook for Designing Mathematics Laboratory In Schools
260 _aNew Delhi
_bN. C. E. R. T.
_c2005
300 _ap.185
942 _2ddc
_cBK
999 _c4263
_d4263