Description and travel 411,497 Diplomatic relations 130,519 Diseases 114,064 Doctrines 103,777 Data processing 76,590 Dictionaries 70,627 Democracy 63,662 Design and construction 62,563 Drama 59,199 Dialects 53,010 Death 42,909 Directories 37,933 Discovery and exploration 36,279 Design 32,462 Documentary films 28,169 Drugs 27,048 Diagnosis 26,433 Dwellings 26,289 Development 24,967 Decision making 24,958 Defenses 23,804 Debts, Public 21,711 Dance 21,680 Drawing 19,767 Discoveries in geography 18,788 Drug abuse 18,034 Death and burial 17,648 Dance music 17,477 Decoration and ornament 16,283 Discourse analysis 15,268 Dogs 15,147 Diseases and pests 14,918 Designs and plans 14,686 Droit 14,534 Decorative arts 14,491 Diaries 14,292 Divorce 13,978 Disaster relief 13,912 Domestic relations 13,622 Database management 12,904 Discipline 11,789 Digital techniques 11,780 Diplomats 11,706 Discrimination in employment 11,266 Drug control 11,041 Data mining 10,940 Dance orchestra music 10,898 Diet 10,728 Dissenters, Religious 10,564 Dissertations, Academic 10,053 Data protection 10,042 Decoration and ornament, Architectural 9,960 Drug traffic 9,658 Demography 9,559 Detective and mystery stories 9,406 Descriptions et voyages 9,268 Democratization 9,267 Doctrinal and controversial works 9,023 Dreams 8,915 Decentralization in government 8,871 Dentistry 8,824 Databases 8,662 Defense contracts 8,578 Debtor and creditor 8,552 Diplomatic history 8,523 Delivery of Health Care 8,476 Disarmament 8,248 Dissertations 8,068 Differential equations 7,403 Dialectical materialism 7,384 Drug use 7,294 Disasters 7,214 Discrimination 7,170 Documentary photography 7,128 Debts, External 6,974 Dams 6,874 Dispute resolution (Law) 6,797 Digital media 6,740 Draft 6,670 Deeds 6,601 Damages 6,524 Diplomatic and consular service 6,398 Devotional literature 6,216 Discrimination & Race Relations 6,178 Defense industries 6,112 Diplomacy 6,093 Differential equations, Partial 6,073 Debt 5,965 Dynamics 5,952 Développement 5,899 Depressions 5,807 Diabetes 5,667 Dutch language 5,654 Dissenters 5,516 Details 5,445 Dutch 5,312 Divination 5,180 Deaf 5,168 Demonstrations 5,143 Demonology 5,022