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American Chemical Society (ACS), 1975
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American Chemical Society (ACS), 1974
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American Chemical Society (ACS), 1975
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American Chemical Society (ACS), 1974
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American Chemical Society (ACS), 1974
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American Chemical Society (ACS), 1976
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American Chemical Society (ACS), 1974
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American Chemical Society (ACS), 1975
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American Chemical Society (ACS), 1971
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American Chemical Society (ACS), 1971
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American Chemical Society (ACS), 1971
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American Chemical Society (ACS), 1972
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American Chemical Society (ACS), 1973
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American Chemical Society (ACS), 1973
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American Chemical Society (ACS), 1972
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American Chemical Society (ACS), 1971
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American Chemical Society (ACS), 1973
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American Chemical Society (ACS), 1972
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American Chemical Society (ACS), 1972
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American Chemical Society (ACS), 1971