000 00288nam a2200121Ia 4500
005 20260205042023.0
008 260111s9999||||xx |||||||||||||| ||und||
100 _aDIENES Z P
245 0 _aBUILDING UP MATHEMATICS
260 _aLOND.
_bHUTCHINSON EDU.
_c1960
300 _a124
942 _cBK
999 _c25313
_d25313