| Subject |
Number of entries |
| Abbreviation |
1 |
| Accounting |
1.777 |
| Accumulators |
156 |
| Acoustics |
107 |
| Agriculture |
56.093 |
| Alcohol distilling |
23 |
| Amphibians and reptiles |
2.786 |
| Analytical chemistry |
3.493 |
| Anatomy |
1 |
| Animal husbandry |
687 |
| Antennas and waveguides |
2.643 |
| Architecture |
338 |
| Art |
1.495 |
| Astronautics |
395 |
| Astronomy |
7.505 |
| Athletics |
605 |
| Automated equipment |
17.077 |
| Automatic control |
464 |
| Aviation |
254 |
| Banking |
1.703 |
| Basketball |
301 |
| Biochemistry |
159 |
| Biology |
1.769 |
| Biotechnology |
1 |
| Book binding |
384 |
| Boxing |
399 |
| Brewery |
43 |
| Building materials |
157 |
| Building structures |
752 |
| Business |
1.157 |
| Cables and cable production |
267 |
| Cardiology |
1 |
| Cement |
24 |
| Ceramics |
93 |
| Chemical fibers |
73 |
| Chemistry |
59.678 |
| Chess |
332 |
| Coal |
5.182 |
| Commerce |
2.709 |
| Communications |
35.544 |
| Computer networks |
204 |
| Computer numerical control |
874 |
| Computers |
30.561 |
| Construction |
56.719 |
| Corporate governance |
64 |
| Criminal law |
1.105 |
| Cultural studies |
4.186 |
| Customs |
315 |
| Cycle sport |
369 |
| Data processing |
151 |
| Demography |
820 |
| Dermatology |
2 |
| Dosimetry |
1.024 |
| Dyalysis |
733 |
| Dyes |
265 |
| Earth sciences |
22.140 |
| Ecology |
218 |
| Economics |
22.849 |
| Education |
8.210 |
| Electric machinery |
284 |
| Electric motors |
418 |
| Electric traction |
660 |
| Electrical engineering |
354 |
| Electricity generation |
212 |
| Electrochemistry |
169 |
| Electronics |
32.695 |
| Embryology |
1 |
| Employment |
223 |
| Energy industry |
5.183 |
| Engineering |
92 |
| English |
409 |
| Entomology |
5.595 |
| Environment |
24.077 |
| Equestrian sports |
487 |
| European Union |
1.822 |
| Explosives and Explosive Ordnance Disposal |
78 |
| Fat-and-oil industry |
25 |
| Fencing |
460 |
| Figure of speech |
2 |
| Finances |
37.571 |
| Finishing |
11 |
| Fish farming pisciculture |
7.127 |
| Fishery fishing industry |
2 |
| Food industry |
5.375 |
| Football |
444 |
| Forestry |
3.955 |
| Foundation engineering |
6 |
| Furniture |
11 |
| Gear train |
1.356 |
| General |
93.135 |
| Genetics |
11 |
| Geography |
935 |
| Geology |
69 |
| Geophysics |
25 |
| Glass production |
84 |
| Government, administration and public services |
912 |
| Grass hockey |
106 |
| Ground forces Army |
4 |
| Gymnastics |
1.414 |
| Handball |
328 |
| Health care |
23.005 |
| Heating |
1 |
| High energy physics |
7.474 |
| Histology |
1 |
| Hobbies and pastimes |
4.193 |
| Horticulture |
34 |
| Human rights activism |
1.281 |
| Hydraulic engineering |
116 |
| Hydraulics |
1 |
| Hydrology |
27 |
| Ice hockey |
197 |
| Ichthyology |
4.231 |
| Immigration and citizenship |
2.352 |
| Industry |
33.207 |
| Information technology |
32.410 |
| Insurance |
6.639 |
| International law |
162 |
| International Monetary Fund |
12.969 |
| International trade |
928 |
| Investment |
85 |
| Isolation |
343 |
| Judo |
406 |
| Kayaking |
207 |
| Labor law |
47.384 |
| Labor organization |
157 |
| Latin American |
11 |
| Law |
103.106 |
| Leather |
234 |
| Life sciences |
19.664 |
| Lighting other than cinema |
515 |
| Machinery and mechanisms |
226 |
| Magnetics |
432 |
| Mammals |
5.023 |
| Marketing |
7.015 |
| Materials science |
7.082 |
| Mathematics |
6.103 |
| Measuring instruments |
4.649 |
| Mechanic engineering |
27.010 |
| Mechanics |
238 |
| Medical appliances |
17.224 |
| Medical |
143.086 |
| Melioration |
8 |
| Metallurgy |
41.276 |
| Meteorology |
29 |
| Metrology |
101 |
| Microscopy |
54 |
| Microsoft |
17.381 |
| Military |
1 |
| Mineral products |
445 |
| Mineralogy |
317 |
| Mining |
243 |
| Municipal planning |
3.301 |
| Name of organization |
25 |
| Natural resourses and wildlife conservation |
24.011 |
| Natural sciences |
19.864 |
| Nautical |
9 |
| Navigation |
8 |
| Nuclear and fusion power |
371 |
| Nuclear physics |
8.407 |
| Obsolete / dated |
948 |
| Obstetrics |
2 |
| Oil / petroleum |
579 |
| Ophthalmology |
2 |
| Optics branch of physics |
9 |
| Ornithology |
10.163 |
| Packaging |
6.006 |
| Paint, varnish and lacquer |
79 |
| Paleontology |
2.074 |
| Paragliding |
573 |
| Parasitology |
1 |
| Patents |
11.659 |
| Pest control |
43 |
| Pharmacology |
143 |
| Pharmacy and pharmacology |
3.352 |
| Photography |
98 |
| Physical sciences |
1.944 |
| Physics |
283 |
| Piezoelectric crystals |
304 |
| Plastics |
198 |
| Platform diving |
137 |
| Plumbing |
52 |
| Politics |
4.215 |
| Polymers |
105 |
| Power electronics |
200 |
| Power lines |
628 |
| Power system protection |
312 |
| Printed circuit boards |
33 |
| Private international law |
60 |
| Procedural law |
1.018 |
| Proverb |
1 |
| Psychiatry |
6 |
| Psychology |
18 |
| Public relations |
26 |
| Pulp and paper industry |
115 |
| Radiation |
13.685 |
| Radio |
1.518 |
| Radiobiology |
239 |
| Radiography |
959 |
| Radiology |
2 |
| Rail transport |
566 |
| Reinforced concrete |
1 |
| Reliability |
407 |
| Religion |
1.492 |
| Remote sensing |
1 |
| Research and development |
637 |
| Resins |
103 |
| Risk Management |
51 |
| Road works |
80 |
| Rowing |
262 |
| Sailing |
943 |
| Satellite communications |
110 |
| School |
26 |
| Scientific |
1.593 |
| Scuba diving |
124 |
| Security systems |
237 |
| Semiconductors |
161 |
| Shooting sport |
349 |
| Skiing |
428 |
| Social science |
7.910 |
| Sociology |
163 |
| Soil mechanics |
5 |
| Sound recording |
363 |
| Speed skating |
377 |
| Sports |
2.057 |
| Statistics |
10.377 |
| Sugar production |
138 |
| Superconductivity |
406 |
| Surgery |
1 |
| Surveying |
100 |
| Swimming |
554 |
| Table tennis |
245 |
| Taxes |
2.238 |
| Technology |
19.330 |
| Telecommunications |
5.823 |
| Telegraphy |
625 |
| Telephony |
242 |
| Tennis |
298 |
| Textile industry |
10.388 |
| Thermal Energy |
485 |
| Thermal engineering |
10 |
| Tools |
103 |
| Trade unions |
420 |
| Transformers |
124 |
| Transport |
72.433 |
| Travel |
450 |
| Ultrasound |
23 |
| United Nations |
737 |
| Vacuum tubes |
59 |
| Ventilation |
48 |
| Veterinary medicine |
4 |
| Video recording |
122 |
| Volleyball |
238 |
| Waste management |
62 |
| Water polo |
160 |
| Water supply |
70 |
| Weightlifting |
147 |
| Welding |
158 |
| Wind Energy |
78 |
| Wiring |
1 |
| Wood processing |
175 |
| Work flow |
2.759 |
| Wrestling |
386 |
| Zoology |
4.177 |
| Total: |
1.433.272 |
