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100   $a20750824b19551990  uy             a
101 0 $aeng
200 00$aEarth science
210   $a[Falls Church, Va., etc.$cAmerican Geological Institute, etc.]
215   $a1 online resource
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606   $aGeology$vPeriodicals
615  0$aGeology
676   $a550/.5
712 02$aAmerican Geological Institute.
712 02$aMidwest Federation of Mineralogical Societies.
906   $aJOURNAL
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996   $aEarth science$92392127
997   $aUNISA