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008			170519s9999 xx 000 0 und d
041			_aEnglish
082			_a540/PIM/UND
100			_aGEORGE PIMENTAL
245			_aUNDERSTADING CHEMISTRY
260			_bHOLDEN-DAY _aLONDON
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650			_aCHEMISTRY
942			_cBK
999			_c74582 _d74582