| Amendments and corrections |
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| April 1, 1993 | Repealed by
31993R1029
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| April 1, 1992 | Modified by 31992R1374
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| April 1, 1991 | Modified by 31991R1632
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| April 1, 1990 | Modified by 31990R1181
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| April 29, 1989 | Modified by 31989R1113
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| March 29, 1989 | Modified by 31989R0765
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| April 1, 1988 | Modified by 31988R2234
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| April 6, 1987 | Modified by 31987R1894
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| April 1, 1986 | Modified by 31986R1338
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| May 27, 1985 | Modified by 31985R1302
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| May 1, 1984 | Modified by 31984R1206
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| May 23, 1983 | Modified by 31983R1209
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| May 20, 1982 | Modified by 31982R1189
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| April 6, 1981 | Modified by 31981R0857
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| June 1, 1980 | Modified by 31980R1364
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| 1980 | Modified by 31980R1364
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| July 2, 1979 | Modified by 31979R1271
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| May 22, 1978 | Modified by 31978R1001
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| September 16, 1977 | Entry into force - See Art 1
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