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024 _a44917
037 _cTextual
040 _aCSL
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082 _aH:(C), L3
100 _aOpen University
245 0 _aGeophysical
260 _aWalton
_bHall Open University
_c1973
300 _ap.
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650 _a Geophysics
650 _aGeology
942 _hH:(C), L3
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999 _c87239
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