Manual of the secondary surveillance radar (SSR) systems / International Civil Aviation Organization
Fixed mobile convergence : business opportunities, trends and market approaches in the global market place / Paul Merry, Dimitris Mavrakis
Leadership in customer service : building the trust / Accenture, S.A.
Vencer a distância : cinco séculos de comunicações em Portugal / Alexandra Fraga...[et al.]; pref. Francisco Leiria Viegas