1. | Report of the department of postal services for the years 1993-1994 / Ministry of Communications and WorksData Publicação: 1995 Tema: Correios e Serviços Postais | ||
2. | Report of the Department of Postal Services for the year 1997 / Ministry of Communications and WorksData Publicação: [1998] Tema: Comunicações Eletrónicas |