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082 1 4 _a372.7
_bFED 19??
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090 _a372.7
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094 _a22.1
100 1 _aFendel, Daniel M.
245 1 0 _aUnderstanding the Structure of Elementary School Mathematics /
_cDaniel M. Fendel.
260 _aBoston :
_bAllyn and Bacon,
_cc1987.
300 _axx, 488 p. :ˆbill. ;‰c24 cm.
650 1 7 _aToán học
_xTrường tiểu học
653 _aElementary Math
653 _aMathematics
900 _aTrue
911 _aN.M.Hải
912 _aN.V.Hành
925 _aG
926 _a0
927 _aSH
928 _abAV75M1
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