Ngā pukapuka me ngā arapāho

History 418 Social aspects 309 Research 187 Study and teaching 163 Philosophy 148 Education 129 Psychological aspects 121 Data processing 114 Management 112 Social conditions 112 Politics and government 111 Political aspects 109 Methodology 102 History and criticism 95 Economic aspects 91 Law and legislation 81 Technological innovations 78 Moral and ethical aspects 76 Psychology 75 Environmental aspects 69 Foreign relations 63 Sustainable development 57 Mathematics 56 Training of 55 Psychoanalysis 54 Government policy 53 Economic conditions 52 Mathematical models 52 Treatment 51 Economic development 49