Telecommunication Congresses 10 Telecommunication policy 10 Law and legislation 8 Computer networks 6 Data transmission systems 5 Telephone 4 Mais ... Bibliography 3 Communication 3 Electronic data processing 3 Information networks 3 International cooperation 3 Mass media 3 Social aspects 3 Communication systems 2 Computers 2 Dictionaries 2 Handbooks, manuals, etc 2 Information storage and retrieval systems 2 Press law 2 Access control 1 Automation 1 Biography 1 Broadcasting 1 Business 1 Case studies 1 Cases 1 Communication in education 1 Communication of technical information 1 Computer industry 1 menos ...