Colección histórico-tecnológica de Telefónica / Rafael Romero Frias; Fundación Arte y Tecnologia (Telefónica)
New communication services: a chalange to computer technology : proceedings / Eight International Conference on Computer Communication ; ed. lit. P. J. Kuehn
Unisselector tipo BPO Nº 2 : (com um só magneto) / Administração - Geral dos Correios, Telégrafos e Telefones
Pacific computer communications'85 : proceedings / Symposium Held in Seoul, Korea, 21-24 October 1985; ed. lit. K.H. Kim, K. Chon e C. V. Ramamoorthy