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