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024 _a47942
037 _cTextual
040 _aCSL
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041 _aeng
082 _aH6:E, K9
100 _aCalvin M
245 0 _aChemical evolution
260 _c1969
300 _ap.
_ccm.
650 _a Evolution
650 _aGeology
942 _hH6:E, K9
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999 _c85857
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