| Agriculture | 5 |
Fish farming pisciculture | 11 |
Nuclear physics | 5 |
| Alternative dispute resolution | 7 |
Foreign trade | 23 |
Oil / petroleum | 3 |
| American usage, not spelling | 1 |
General | 126 |
Oil and gas | 5 |
| Analytical chemistry | 1 |
Geomechanics | 1 |
Patents | 4 |
| Artificial intelligence | 6 |
Health care | 4 |
Pharmacy and pharmacology | 4 |
| Astronomy | 2 |
High energy physics | 1 |
Physics | 20 |
| Automated equipment | 8 |
Hobbies and pastimes | 3 |
Power lines | 1 |
| Automobiles | 2 |
Industry | 21 |
Power system protection | 2 |
| Banking | 3 |
Information technology | 29 |
Procedural law | 4 |
| Biology | 6 |
Insurance | 15 |
Psychology | 1 |
| British usage, not spelling | 2 |
International Monetary Fund | 4 |
Racing and motorsport | 2 |
| Business | 20 |
International trade | 1 |
Radiation | 4 |
| Chemistry | 57 |
Labor law | 2 |
Radiography | 3 |
| Coal | 22 |
Law | 68 |
Refrigeration | 3 |
| Commerce | 6 |
Life sciences | 7 |
Reliability | 12 |
| Communications | 18 |
Marketing | 2 |
Sample preparation | 4 |
| Computers | 10 |
Materials science | 2 |
Semiconductors | 1 |
| Construction | 16 |
Mathematics | 1 |
Sewage and wastewater treatment | 1 |
| Criminal law | 6 |
Measuring instruments | 9 |
Skydiving | 1 |
| Customs | 3 |
Mechanic engineering | 7 |
Social science | 1 |
| Drilling | 1 |
Medical | 26 |
Speed skating | 1 |
| Earth sciences | 24 |
Medical appliances | 1 |
Statistics | 3 |
| Ecology | 4 |
Metallurgy | 18 |
Superconductivity | 1 |
| Economics | 79 |
Microelectronics | 18 |
Taxes | 5 |
| Electrical engineering | 1 |
Microsoft | 47 |
Technology | 89 |
| Electronics | 69 |
Military | 1 |
Telecommunications | 3 |
| Emergency medical care | 1 |
Mining | 17 |
Telegraphy | 1 |
| Energy industry | 26 |
Municipal planning | 2 |
Textile industry | 20 |
| Environment | 60 |
Natural resourses and wildlife conservation | 66 |
Transport | 17 |
| European Bank for Reconstruction and Development | 1 |
Natural sciences | 4 |
United Nations | 1 |
| Finances | 67 |
Non-governmental organizations | 1 |
Waste management | 8 |
