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024 _a45013
037 _cTextual
040 _aCSL
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082 _aH:(E), L7
100 _aOpen University
245 0 _aGeochemistry
260 _aWalton
_bHall Open University
_c1977
300 _ap.
_ccm.
650 _a Geochemistry
650 _aGeology
942 _hH:(E), L7
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999 _c87182
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