Mass media 212 Social aspects 48 Communication 34 Political aspects 23 History 14 Research 12 Study and teaching 10 Popular culture 9 Periodicals 7 Congresses 6 Mass media in education 6 Politics and government 6 Social conditions 6 Telecommunication 6 Television broadcasting 6 Audiences 5 Economic aspects 5 Journalism 5 Psychological aspects 5 Public relations 5 Bibliography 4 Civilization 4 Communication in politics 4 Culture 4 Law and legislation 4 Mass media and children 4 Mass media and sports 4 Mass media and women 4 Mass media policy 4 Public opinion 4