International relations 152,387 Islam 150,921 Intellectual life 133,467 Indians of North America 112,679 Industries 88,840 Influence 78,722 In literature 58,457 International economic relations 49,230 International cooperation 43,835 Immigrants 40,830 Industrial management 36,580 Indians of South America 35,764 Islamic law 35,268 International law 33,433 Information technology 32,421 Influence (Literary, artistic, etc.) 32,410 Income tax 27,811 Investments 27,635 Investments, Foreign 25,695 Internet 25,500 Industrial relations 24,450 International trade 24,255 Instruction and study 23,020 Intellectuals 22,691 Interpretation and construction 22,354 Islam and politics 21,597 Interpersonal relations 21,574 Investigation 21,019 Italian literature 20,564 Indexes 20,545 Interviews 20,189 Industrial policy 19,890 International business enterprises 19,656 Information storage and retrieval systems 19,103 Italian language 19,042 Indians of Mexico 18,369 Information services 17,851 Inheritance and succession 17,795 Indigenous peoples 17,201 Informatique 15,576 Interfaith relations 15,479 Insects 15,115 In art 14,885 Identification 14,712 Income 14,529 Instrumental music 14,395 International economic integration 13,724 International finance 13,661 Industrial safety 13,508 Irrigation 13,506 Insurance 13,417 Instrumental ensembles 13,348 Infants 13,204 Intelligence service 13,193 Islam and state 13,035 Imperialism 12,927 Interior decoration 12,661 Identity 12,403 Indians 12,332 Image processing 12,222 Income distribution 12,112 Islamic philosophy 11,882 Intellectual property 11,348 Illustrations 11,178 Installations (Art) 10,810 Inscriptions, Chinese 10,696 Italian poetry 10,651 Imprints 10,075 Infant 10,035 Intercultural communication 9,939 Inflation (Finance) 9,910 Internal Medicine 9,660 Internal security 9,570 Industrial Management 9,548 International 9,484 Illustration of books 9,394 Identity (Psychology) 9,206 Industrial applications 9,153 Industrie 9,029 Incidental music 8,748 Islamic ethics 8,593 Infrastructure (Economics) 8,508 Industrial hygiene 8,507 Iraq War, 2003-2011 8,474 Interest 8,146 Information Systems Applications (incl. Internet) 7,727 Islamic civilization 7,715 Integrated circuits 7,534 Islamic fundamentalism 7,497 Indians of Central America 7,464 Industrial productivity 7,427 Irish authors 7,423 Idioms 7,386 Illumination of books and manuscripts 7,371 International status 7,312 Inquisition 7,283 Incunabula 7,253 Insurgency 7,245 Iron industry and trade 7,186 Industrialization 6,952