| Subject |
Number of entries |
| Abbreviation |
1 |
| Accounting |
3.172 |
| Accumulators |
328 |
| Acoustics |
12 |
| Agriculture |
37.638 |
| Agrochemistry |
39 |
| Agronomy |
1.394 |
| Airports and air traffic control |
1 |
| Alcohol distilling |
37 |
| American usage, not spelling |
990 |
| Ampelography |
62 |
| Analytical chemistry |
5.424 |
| Anatomy |
590 |
| Animal husbandry |
374 |
| Antennas and waveguides |
1.936 |
| Architecture |
430 |
| Art |
50 |
| Astronautics |
72 |
| Astronomy |
21 |
| Australian |
2 |
| Automated equipment |
262 |
| Automatic control |
918 |
| Automobiles |
48 |
| Aviation |
1 |
| Banking |
478 |
| Beekeeping |
469 |
| Bible |
3 |
| Biochemistry |
345 |
| Biology |
973 |
| Book binding |
5 |
| Botany |
2.940 |
| Brewery |
63 |
| British usage, not spelling |
594 |
| Building materials |
242 |
| Building structures |
940 |
| Business |
346 |
| Cables and cable production |
383 |
| Card games |
13 |
| Cardiology |
62 |
| Cartography |
1 |
| Cement |
32 |
| Ceramics |
143 |
| Chemical fibers |
82 |
| Chemistry |
18.235 |
| Cinematography |
20 |
| Coal |
42 |
| Commerce |
1.329 |
| Communications |
2.024 |
| Computer networks |
296 |
| Computers |
73 |
| Construction |
53.465 |
| Contemptuous |
2 |
| Corporate governance |
29 |
| Criminal law |
973 |
| Cultural studies |
103 |
| Customs |
401 |
| Cytology |
43 |
| Data processing |
149 |
| Demography |
67 |
| Dyes |
318 |
| Earth sciences |
553 |
| Ecology |
299 |
| Economics |
14.060 |
| Education |
2.039 |
| Electric machinery |
692 |
| Electric motors |
1.160 |
| Electric traction |
1.417 |
| Electrical engineering |
634 |
| Electricity generation |
1.106 |
| Electrochemistry |
325 |
| Electronics |
5.427 |
| Employment |
76 |
| Energy industry |
1.047 |
| Engineering |
149 |
| English |
74 |
| Entomology |
716 |
| Environment |
10.128 |
| European Union |
116 |
| Explosives and Explosive Ordnance Disposal |
102 |
| Fashion |
31 |
| Fat-and-oil industry |
32 |
| Figurative |
116 |
| Finances |
10.118 |
| Finishing |
10 |
| Fish farming pisciculture |
2.639 |
| Food industry |
2.221 |
| Forestry |
4.158 |
| Foundation engineering |
6 |
| Furniture |
12 |
| Gastroenterology |
84 |
| General |
83.415 |
| Geography |
775 |
| Geology |
163 |
| Geophysics |
28 |
| Glass production |
143 |
| Government, administration and public services |
343 |
| Ground forces Army |
2 |
| Health care |
4.322 |
| Historical |
52 |
| Hobbies and pastimes |
130 |
| Horticulture |
498 |
| Human rights activism |
1.464 |
| Hydraulic engineering |
177 |
| Hydrology |
221 |
| Ichthyology |
340 |
| Idiomatic |
4 |
| Immigration and citizenship |
1.303 |
| Industry |
510 |
| Informal |
3 |
| Information technology |
1.508 |
| Insurance |
470 |
| International law |
171 |
| International trade |
336 |
| Investment |
70 |
| Isolation |
654 |
| Labor law |
310 |
| Labor organization |
61 |
| Latin American |
8 |
| Law |
5.933 |
| Leather |
110 |
| Life sciences |
2.493 |
| Lighting other than cinema |
1.300 |
| Linguistics |
105 |
| Literature |
35 |
| Machinery and mechanisms |
340 |
| Magnetics |
1.037 |
| Mammals |
55 |
| Marketing |
237 |
| Materials science |
186 |
| Mathematics |
7.636 |
| Mechanic engineering |
264 |
| Mechanics |
264 |
| Medical |
9.041 |
| Melioration |
195 |
| Metallurgy |
501 |
| Meteorology |
242 |
| Metrology |
182 |
| Microscopy |
99 |
| Microsoft |
19.118 |
| Military |
98 |
| Mineral products |
157 |
| Mineralogy |
523 |
| Mining |
145 |
| Municipal planning |
80 |
| Music |
130 |
| Mycology |
69 |
| Mythology |
1 |
| Natural resourses and wildlife conservation |
258 |
| Natural sciences |
718 |
| Nautical |
961 |
| Notarial practice |
1 |
| Nuclear and fusion power |
47 |
| Nuclear physics |
1.007 |
| Obsolete / dated |
1.453 |
| Oil / petroleum |
341 |
| Ornithology |
216 |
| Paint, varnish and lacquer |
125 |
| Patents |
479 |
| Pharmacology |
183 |
| Pharmacy and pharmacology |
1.550 |
| Philosophy |
15 |
| Photography |
164 |
| Physical sciences |
232 |
| Physics |
624 |
| Physiology |
84 |
| Phytophathology |
567 |
| Piezoelectric crystals |
492 |
| Plastics |
281 |
| Plumbing |
62 |
| Politics |
3.347 |
| Polymers |
163 |
| Power electronics |
339 |
| Power lines |
1.217 |
| Power system protection |
673 |
| Printed circuit boards |
72 |
| Private international law |
47 |
| Procedural law |
1.120 |
| Proverb |
2 |
| Psychology |
22 |
| Public relations |
7 |
| Pulp and paper industry |
150 |
| Radio |
2.689 |
| Radiobiology |
476 |
| Radiology |
947 |
| Rail transport |
736 |
| Reinforced concrete |
1 |
| Reliability |
649 |
| Religion |
282 |
| Research and development |
297 |
| Resins |
147 |
| Risk Management |
84 |
| Road works |
107 |
| Rude |
14 |
| Satellite communications |
239 |
| School |
14 |
| Scientific |
167 |
| Security systems |
87 |
| Semiconductors |
509 |
| Sewing and clothing industry |
1 |
| Slang |
2 |
| Social science |
1.519 |
| Sociology |
119 |
| Soil mechanics |
4 |
| Soil science |
484 |
| Sound recording |
729 |
| Sports |
150 |
| Statistics |
1.158 |
| Sugar production |
120 |
| Superconductivity |
593 |
| Surveying |
213 |
| Taxes |
407 |
| Technology |
4.320 |
| Telecommunications |
1.085 |
| Telegraphy |
1.164 |
| Telephony |
490 |
| Television |
4 |
| Textile industry |
25 |
| Theatre |
12 |
| Thermal Energy |
961 |
| Thermal engineering |
17 |
| Tools |
139 |
| Trade unions |
116 |
| Transformers |
309 |
| Transport |
6.091 |
| Traumatology |
2 |
| Typography |
18 |
| Ultrasound |
46 |
| United Nations |
526 |
| University |
19 |
| Vacuum tubes |
850 |
| Ventilation |
64 |
| Veterinary medicine |
895 |
| Video recording |
222 |
| Waste management |
107 |
| Water supply |
93 |
| Welding |
252 |
| Wind Energy |
153 |
| Wiring |
2 |
| Wood processing |
36 |
| Work flow |
66 |
| Zoology |
543 |
| Zootechnics |
1.428 |
| Total: |
397.107 |
