Progress toward liberalization of the postal and delivery sector / ed. by Michael A. Crew and Paul K. Kleindorfer
Relatório da '14th conference on postal and delivery economics' / Autoridade Nacional de Comunicações
Liberalization of the postal and delivery sector / ed. by Michael A. Crew and Paul Kleindorfer
Annual report 2005 [documento eletrónico] / National Regulatory Authority for Communications