| Subject |
Number of entries |
| Accounting |
2.780 |
| Agriculture |
57.483 |
| Animal husbandry |
1.001 |
| Art |
483 |
| Astronautics |
1.444 |
| Aviation |
4 |
| Banking |
316 |
| Book binding |
2 |
| Business |
981 |
| Chemistry |
37.841 |
| Coal |
3.938 |
| Commerce |
2.953 |
| Communications |
51.754 |
| Computers |
33 |
| Construction |
10.917 |
| Corporate governance |
54 |
| Criminal law |
1.127 |
| Cultural studies |
3.103 |
| Customs |
446 |
| Data processing |
284 |
| Demography |
523 |
| Earth sciences |
28.217 |
| Ecology |
237 |
| Economics |
29.575 |
| Education |
3.982 |
| Electronics |
53.010 |
| Employment |
377 |
| Energy industry |
3.592 |
| Environment |
38.151 |
| European Union |
26 |
| Finances |
41.290 |
| Fish farming pisciculture |
6.469 |
| Food industry |
5.837 |
| Forestry |
623 |
| General |
46.836 |
| Geography |
1.217 |
| Geophysics |
22 |
| Government, administration and public services |
1.464 |
| Health care |
20.585 |
| Hobbies and pastimes |
2.914 |
| Human rights activism |
1.758 |
| Immigration and citizenship |
2.373 |
| Industry |
39.238 |
| Information technology |
45.258 |
| Insurance |
5.697 |
| International law |
210 |
| International trade |
919 |
| Investment |
187 |
| Labor law |
7.479 |
| Labor organization |
117 |
| Latin American |
9 |
| Law |
28.172 |
| Leather |
288 |
| Life sciences |
20.441 |
| Mammals |
195 |
| Marketing |
6.295 |
| Materials science |
9.606 |
| Mathematics |
2.732 |
| Mechanic engineering |
36.144 |
| Medical |
97.746 |
| Metallurgy |
23.428 |
| Microsoft |
17.332 |
| Mineral products |
339 |
| Mining |
89 |
| Municipal planning |
3.355 |
| Natural resourses and wildlife conservation |
8.484 |
| Natural sciences |
23.640 |
| Nautical |
4 |
| Nuclear and fusion power |
398 |
| Nuclear physics |
959 |
| Obsolete / dated |
1.261 |
| Oil / petroleum |
308 |
| Ornithology |
119 |
| Patents |
1.143 |
| Pharmacy and pharmacology |
3.672 |
| Physical sciences |
2.131 |
| Politics |
5.536 |
| Private international law |
66 |
| Procedural law |
1.782 |
| Psychology |
10 |
| Public relations |
20 |
| Religion |
451 |
| Research and development |
586 |
| School |
43 |
| Scientific |
1.313 |
| Security systems |
316 |
| Social science |
7.439 |
| Sociology |
203 |
| Statistics |
17.394 |
| Sugar production |
78 |
| Taxes |
2.235 |
| Technology |
9.085 |
| Textile industry |
1.203 |
| Trade unions |
563 |
| Transport |
80.956 |
| United Nations |
684 |
| Waste management |
120 |
| Wood processing |
161 |
| Work flow |
4.521 |
| Total: |
988.182 |
