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1986-03-27
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1985-11-25
GR852764B
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1986-03-13
DE3590494T1
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1987-03-12
GR850804B
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1985-11-25
GR851541B
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1985-11-25
DE3490802T1
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1987-02-19
GR79622B
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1984-10-31
GR76616B
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1984-08-21
GR74662B
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1984-06-29
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1984-06-06
GR73791B
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1984-04-12
IN160000B
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1987-06-20
BG45273A1
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1989-05-15
BG45164A1
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1989-04-14
EP0495558A3
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1994-08-31
CA1266155C
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1990-02-27
CA1253145C
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1989-04-25
BG45334A1
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1989-05-15
BG45317A1
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1989-05-15
BG44718A1
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1989-02-15
BG45296A1
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1989-05-15
BG45280A1
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1989-05-15
BG45279A1
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1989-05-15
BG45165A1
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1989-04-14