History 630 Politics and government 231 Law and legislation 206 Historia 189 Psychology 165 Psicología 154 Social conditions 151 Máis ... Psicologia 148 Economic conditions 136 Social aspects 128 Public administration 109 Political science 95 Administración pública 93 Violence 91 Indians of South America 88 Education 83 Peace-building 81 Ciencia política 78 Study and teaching 75 Education, Higher 74 History and criticism 71 Research 71 Political violence 67 Economics 61 Legislación 61 Economic aspects 54 Economía 54 Taxation 54 Política y gobierno 52 Social life and customs 52 menos ...