History 405 Social aspects 100 Politics and government 80 History and criticism 69 Research 61 Political aspects 55 Architecture 50 Design 50 Design and construction 45 Methodology 45 Social conditions 44 Art, Modern 39 Criticism and interpretation 39 Management 38 Environmental aspects 37 Philosophy 37 Data processing 35 Fashion design 32 Photography 32 Technological innovations 32 Architecture, Modern 31 Economic aspects 30 Psychological aspects 29 Graphic arts 27 World War, 1939-1945 27 Art 24 Materials 24 Race relations 24 Architectural design 22 Influence 22