UN R88 (1993)
31 Mar 1993 2011-02-01 07:47:29 UTC
UN R88 (2007)
7 Aug 2007 2011-02-01 07:48:18 UTC
UN R88 (1993)
27 Sep 1993 2011-02-01 07:49:50 UTC
Earlier texts may be available through the UN Official Document System.