Revision 2 (2023)
Revision 2 | Amendment 1 (2022)
Revision 2 | Amendment 2 (2022)
Revision 2 | Amendment 3 (2023)
Revision 1 (2017)
Revision 1 | Amendment 1 (2019)
Revision 1 | Amendment 2 (2019)
Revision 1 | Amendment 3 (2021)
UN R137 (2016)
Amendment 1 (2017)
Amendment 2 (2019)
Earlier texts may be available through the UN Official Document System.