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008 230929s9999 xx 000 0 und d
020 _a'1864180536
090 _a510
100 0 _aKNAPP,BRIAN
245 0 0 _aMATH MATTERS CHANGE AND AVERAGE
260 _aAUSTRALIA
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650 0 _aMATH/SCIENCE
999 _c2777
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