Statistique des services postaux 2014 / Union Postale Universelle
Statistique des services postaux 2013 / Union Postale Universelle
Annual report 2013 [documento eletrónico] / Universal Postal Union
Development strategies for the postal sector [documento eletrónico] : an economic perspective / Universal Postal Union; pref. Bishar A. Hussein
Statistique des services postaux 2012 / Union Postale Universelle
Statistique des services postaux 2011 / Economic and Regulatory Affairs Directorate of UPU