International relations 152,356 Islam 150,993 Intellectual life 133,658 Indians of North America 112,686 Industries 88,936 Influence 78,857 In literature 58,554 International economic relations 49,271 International cooperation 43,874 Immigrants 40,934 Industrial management 36,621 Indians of South America 35,798 Islamic law 35,338 International law 33,471 Information technology 32,528 Influence (Literary, artistic, etc.) 32,396 Income tax 28,424 Investments 27,655 Investments, Foreign 26,341 International trade 26,040 Internet 25,532 Industrial relations 24,464 Instruction and study 23,035 Intellectuals 22,738 Interpretation and construction 22,416 Interpersonal relations 21,656 Islam and politics 21,626 Investigation 21,109 Italian literature 20,568 Indexes 20,560 Interviews 20,203 Industrial policy 19,905 International business enterprises 19,675 Information storage and retrieval systems 19,116 Italian language 19,052 Indians of Mexico 18,387 Information services 17,851 Inheritance and succession 17,819 Indigenous peoples 17,215 Income 16,474 Informatique 15,631 Interfaith relations 15,462 Insects 15,113 In art 14,904 Identification 14,714 International finance 14,425 Instrumental music 14,400 International economic integration 13,810 Insurance 13,750 Industrial safety 13,515 Irrigation 13,507 Instrumental ensembles 13,358 Intelligence service 13,215 Infants 13,184 Islam and state 13,057 Imperialism 12,955 Interior decoration 12,691 Income distribution 12,488 Identity 12,438 Indians 12,319 Image processing 12,249 Islamic philosophy 11,902 Intellectual property 11,363 Illustrations 11,180 Installations (Art) 10,845 Inscriptions, Chinese 10,710 Italian poetry 10,651 Imprints 10,071 Infant 10,029 Intercultural communication 9,960 Inflation (Finance) 9,920 Internal Medicine 9,660 Internal security 9,584 Industrial Management 9,561 International 9,467 Illustration of books 9,390 Industrie 9,246 Identity (Psychology) 9,230 Industrial applications 9,178 Incidental music 8,767 International economics 8,741 Islamic ethics 8,611 Infrastructure (Economics) 8,527 Industrial hygiene 8,511 Iraq War, 2003-2011 8,493 Industrial productivity 8,156 Interest 8,145 Information Systems Applications (incl. Internet) 7,727 Islamic civilization 7,722 Integrated circuits 7,540 Islamic fundamentalism 7,515 Indians of Central America 7,474 Irish authors 7,443 Idioms 7,398 Illumination of books and manuscripts 7,375 International agencies 7,340 International status 7,320 Inquisition 7,287 Incunabula 7,253 Insurgency 7,252