History 289
History and criticism 76
Politics and government 61
Social aspects 53
Social conditions 45
methods 27
Criticism and interpretation 25
Mathematical models 20
Philosophy 20
Political aspects 20
African Americans 18
Research 18
Social life and customs 17
Design and construction 16
Race relations 16
Women 16
Diseases 15
Economic conditions 15
psychology 15
Science 14
therapy 14
Government policy 13
Water 13
Children 12
Child 11
Economic aspects 11
Emigration and immigration 11
Ethnic relations 11
Influence 11
Water-pipes 11
Economic policy 10
English literature 10
Evolution (Biology) 10
Foreign relations 10
Medical care 10
Medicine 10
Music 10
Political activity 10
Prevention 10
American literature 9
Antiquities 9
Civil rights 9
Civilization 9
Environmental aspects 9
Management 9
Methodology 9
Motion pictures 9
Nationalism 9
Psychology 9
Risk assessment 9
World War, 1939-1945 9
diagnosis 9
history 9
Brain 8
Colonies 8
Commerce 8
Data processing 8
Diagnosis 8
Finance 8
History, Military 8
In literature 8
Language and languages 8
Risk Assessment 8
Slavery 8
Socioeconomic Factors 8
Treatment 8
physiology 8
Cognition 7
Ecology 7
Evolution 7
Globalization 7
Intellectual life 7
Mathematics 7
Psychoanalysis 7
Psychological aspects 7
Safety measures 7
Technological innovations 7
Therapeutic use 7
prevention & control 7
standards 7
trends 7
Civil rights movements 6
Distribution 6
Education 6
Enslaved persons 6
Health Policy 6
Literature and society 6
Mental Disorders 6
Political culture 6
Pollution 6
Public health 6
Social change 6
Sociolinguistics 6
Study and teaching 6
economics 6
etiology 6
therapeutic use 6
Behavior 5
Biotechnology 5
Child development 5
