Case postale 13
3000 Bern 15
Switzerland

Tel: +41 31 350 31 11
Fax: +41 31 350 31 10
E-mail: info@upu.int
Website: www.upu.int/


Liaisons A: Organizations that make an effective contribution to the work of the technical committee or subcommittee for questions dealt with by this technical committee or subcommittee. 
Liaisons B: Organizations that have indicated a wish to be kept informed of the work of the technical committee or subcommittee. 
Liaisons C: Organizations that make a technical contribution to and participate actively in the work of a working group.