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020 _a0719544599
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040 _bgre
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082 7 _a510
_223
245 1 0 _aSteps in understanding mathematics :
_bteachers΄resource book.
260 _aLondon:
_bMurray,
_c1992.
300 _a192 p. :
_bill. ;
_c30 cm.
650 0 _aMathematics
_911246
710 2 0 _aMurray
_4pbl
_912231
911 _a035151
_e20190104
_j1992
_n510 STE
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999 _c13069
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