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041 _aENG
082 _a370.15'24
100 _a"O'Connell, susan"
245 0 _aIntroduction to Problem Solving Grades 3-5 Ed.2
260 _b"Portsmouth : Heinemann, 2007"
260 _c2007
300 _a181 hlm;bib;;28 cm
650 _aProblem Solving
942 _cBKS
999 _c70390
_d70389