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UN R81 (1989)
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18 Sep 1989 | 2011-01-28 17:06:41 UTC | ||||
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UN R81 (1998)
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7 May 1998 | 2011-01-28 17:07:42 UTC | ||||
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UN R81 (2007)
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7 Aug 2007 | 2011-01-28 17:24:56 UTC | ||||
| Earlier texts may be available through the UN Official Document System. |