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024 _a136,593
037 _cTextual
040 _aARTS
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082 _aX9F555.51, L0
100 _aHahn Albert V G
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245 0 _cHahn Albert V G
_aPetrochemical industry
_b Market and economics
260 _aNA
_bNA
_c1970
650 _aECONOMICS
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