History 531 Social aspects 225 Counterculture 202 Subculture periodicals 137 Politics and government 116 Political aspects 107 History and criticism 103 Research 102 Management 99 Social conditions 97 Design 83 Methodology 80 Women 76 Architecture 72 Technological innovations 70 Economic aspects 64 Philosophy 63 Psychological aspects 59 Sports 58 Subculture 58 Data processing 57 Design and construction 57 Environmental aspects 53 Kung fu 52 Criticism and interpretation 49 Art, Modern 45 Entrepreneurship 44 Foreign relations 40 Social life and customs 40 Men 37