| Accounting | 40 |
Forestry | 61 |
Plastics | 2 |
| Accumulators | 7 |
Foundation engineering | 2 |
Platform diving | 10 |
| Agriculture | 2279 |
Gear train | 18 |
Politics | 201 |
| Amphibians and reptiles | 11 |
General | 3731 |
Polymers | 6 |
| Analytical chemistry | 48 |
Geography | 2 |
Power electronics | 12 |
| Animal husbandry | 25 |
Government, administration and public services | 24 |
Power lines | 25 |
| Antennas and waveguides | 79 |
Grass hockey | 4 |
Power system protection | 5 |
| Architecture | 5 |
Gymnastics | 218 |
Private international law | 2 |
| Art | 13 |
Handball | 17 |
Procedural law | 45 |
| Astronautics | 13 |
Health care | 479 |
Pulp and paper industry | 3 |
| Astronomy | 98 |
High energy physics | 139 |
Radiation | 404 |
| Athletics | 28 |
Hobbies and pastimes | 83 |
Radio | 42 |
| Automated equipment | 305 |
Human rights activism | 36 |
Radiography | 30 |
| Automatic control | 27 |
Hydraulic engineering | 2 |
Rail transport | 14 |
| Aviation | 6 |
Ice hockey | 5 |
Reliability | 17 |
| Banking | 70 |
Ichthyology | 7 |
Religion | 36 |
| Basketball | 20 |
Immigration and citizenship | 137 |
Research and development | 25 |
| Biology | 12 |
Industry | 1229 |
Resins | 4 |
| Book binding | 17 |
Information technology | 1252 |
Road works | 7 |
| Boxing | 24 |
Insurance | 328 |
Rowing | 32 |
| Brewery | 1 |
International law | 13 |
Sailing | 15 |
| Building materials | 9 |
International Monetary Fund | 510 |
Satellite communications | 3 |
| Building structures | 22 |
International trade | 41 |
School | 15 |
| Business | 62 |
Investment | 4 |
Scientific | 48 |
| Cables and cable production | 19 |
Isolation | 15 |
Security systems | 12 |
| Chemistry | 1016 |
Judo | 45 |
Semiconductors | 12 |
| Chess | 3 |
Kayaking | 4 |
Shooting sport | 5 |
| Coal | 238 |
Labor law | 5490 |
Skiing | 35 |
| Commerce | 116 |
Labor organization | 9 |
Social science | 263 |
| Communications | 1445 |
Law | 5933 |
Sociology | 5 |
| Computer networks | 6 |
Leather | 9 |
Sound recording | 12 |
| Computer numerical control | 22 |
Life sciences | 561 |
Speed skating | 25 |
| Computers | 743 |
Lighting other than cinema | 10 |
Sports | 35 |
| Construction | 2865 |
Machinery and mechanisms | 1 |
Statistics | 320 |
| Corporate governance | 2 |
Magnetics | 16 |
Sugar production | 1 |
| Criminal law | 61 |
Mammals | 2 |
Superconductivity | 19 |
| Cultural studies | 178 |
Marketing | 437 |
Swimming | 29 |
| Customs | 34 |
Materials science | 349 |
Table tennis | 1 |
| Cycle sport | 11 |
Mathematics | 104 |
Taxes | 93 |
| Demography | 28 |
Measuring instruments | 61 |
Technology | 459 |
| Dosimetry | 66 |
Mechanic engineering | 796 |
Telecommunications | 187 |
| Dyalysis | 16 |
Mechanics | 3 |
Telegraphy | 22 |
| Dyes | 6 |
Medical | 1599 |
Telephony | 2 |
| Earth sciences | 538 |
Medical appliances | 465 |
Tennis | 10 |
| Ecology | 7 |
Metallurgy | 1717 |
Textile industry | 289 |
| Economics | 767 |
Microsoft | 521 |
Thermal Energy | 21 |
| Education | 315 |
Mineral products | 17 |
Thermal engineering | 3 |
| Electric machinery | 9 |
Mineralogy | 1 |
Tools | 1 |
| Electric motors | 15 |
Mining | 7 |
Trade unions | 9 |
| Electric traction | 17 |
Municipal planning | 97 |
Transformers | 5 |
| Electrical engineering | 8 |
Natural resourses and wildlife conservation | 650 |
Transport | 2660 |
| Electricity generation | 12 |
Natural sciences | 345 |
Travel | 5 |
| Electrochemistry | 6 |
Nuclear and fusion power | 20 |
United Nations | 71 |
| Electronics | 1459 |
Nuclear physics | 275 |
Vacuum tubes | 4 |
| Employment | 5 |
Obsolete / dated | 12 |
Video recording | 2 |
| Energy industry | 190 |
Oil / petroleum | 14 |
Volleyball | 8 |
| Engineering | 3 |
Ornithology | 24 |
Waste management | 3 |
| English | 1 |
Packaging | 224 |
Water polo | 4 |
| Entomology | 5 |
Paint, varnish and lacquer | 1 |
Water supply | 3 |
| Environment | 808 |
Paragliding | 20 |
Weightlifting | 6 |
| Equestrian sports | 33 |
Patents | 588 |
Welding | 9 |
| European Union | 76 |
Pest control | 2 |
Wind Energy | 3 |
| Fencing | 13 |
Pharmacology | 1 |
Wood processing | 11 |
| Finances | 1790 |
Pharmacy and pharmacology | 63 |
Work flow | 61 |
| Fish farming pisciculture | 95 |
Photography | 5 |
Wrestling | 60 |
| Fishery fishing industry | 1 |
Physical sciences | 25 |
Zoology | 5 |
| Food industry | 124 |
Physics | 6 |
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| Football | 15 |
Piezoelectric crystals | 16 |
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