International relations 152,369 Islam 150,955 Intellectual life 133,509 Indians of North America 112,622 Industries 88,837 Influence 78,745 In literature 58,473 International economic relations 49,233 International cooperation 43,840 Immigrants 40,854 Industrial management 36,590 Indians of South America 35,763 Islamic law 35,280 International law 33,446 Information technology 32,442 Influence (Literary, artistic, etc.) 32,413 Income tax 27,811 Investments 27,638 Investments, Foreign 25,699 Internet 25,509 Industrial relations 24,453 International trade 24,257 Instruction and study 23,023 Intellectuals 22,702 Interpretation and construction 22,366 Islam and politics 21,601 Interpersonal relations 21,589 Investigation 21,032 Italian literature 20,565 Indexes 20,548 Interviews 20,190 Industrial policy 19,892 International business enterprises 19,660 Information storage and retrieval systems 19,113 Italian language 19,042 Indians of Mexico 18,367 Information services 17,851 Inheritance and succession 17,796 Indigenous peoples 17,212 Informatique 15,582 Interfaith relations 15,473 Insects 15,116 In art 14,886 Identification 14,711 Income 14,529 Instrumental music 14,394 International economic integration 13,728 International finance 13,662 Industrial safety 13,510 Irrigation 13,506 Insurance 13,417 Instrumental ensembles 13,350 Infants 13,205 Intelligence service 13,193 Islam and state 13,039 Imperialism 12,930 Interior decoration 12,667 Identity 12,410 Indians 12,324 Image processing 12,237 Income distribution 12,116 Islamic philosophy 11,885 Intellectual property 11,349 Illustrations 11,177 Installations (Art) 10,814 Inscriptions, Chinese 10,687 Italian poetry 10,654 Imprints 10,059 Infant 10,036 Intercultural communication 9,951 Inflation (Finance) 9,910 Internal Medicine 9,658 Internal security 9,571 Industrial Management 9,560 International 9,484 Illustration of books 9,390 Identity (Psychology) 9,212 Industrial applications 9,164 Industrie 9,050 Incidental music 8,754 Islamic ethics 8,594 Infrastructure (Economics) 8,515 Industrial hygiene 8,509 Iraq War, 2003-2011 8,476 Interest 8,146 Information Systems Applications (incl. Internet) 7,727 Islamic civilization 7,717 Integrated circuits 7,540 Islamic fundamentalism 7,499 Indians of Central America 7,462 Irish authors 7,430 Industrial productivity 7,428 Idioms 7,388 Illumination of books and manuscripts 7,369 International status 7,313 Inquisition 7,282 Incunabula 7,253 Insurgency 7,246 Iron industry and trade 7,185 Industrialization 6,953