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1987-12-10
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1987-01-30
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1989-11-17
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1984-12-20
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1984-09-29
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1993-06-25
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1985-11-07
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1986-02-28
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1985-06-29
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1986-04-30
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1982-04-09
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1986-02-28
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1985-11-29
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1983-09-26
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1987-10-14
Process for the preparation of halogenide-free quaternary ammonium salts
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1982-05-27
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1988-02-05
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1986-02-28
Sels quaternaires de quinolinium et procede de preparation
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1985-05-20
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1986-11-28
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