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024 _a50457
037 _cTextual
040 _aCRL
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041 _2eng
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082 _aTa, L9
100 _aHill Claire Conley
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245 0 _aProblem solving
_b Learning and teaching
260 _aLonodn
_bFrances Pinter
_c1979
300 _a143p.
_ccm.
650 _aEDUCATION
942 _hTa, L9
_cTEXL
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999 _c971750
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