UN R31 | Revision 2 | Amendment 1 (2013)
UN R31 | Revision 2 (2009)
UN R31 | Revision 2 | Corrigendum 1 (2009)
Revision 2 | Corrigendum 1 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:
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Revision 2 – Erratum (entry into force: 23 Apr 2009)
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UN R31 | Revision 3 (2014)