Accounting	603
Accumulators	81
Acoustics	35
Acridology	2
Agriculture	16747
Alcohol distilling	14
Alternative dispute resolution	1
Animal husbandry	167
Antennas and waveguides	1474
Art	140
Astronautics	122
Astronomy	22
Automated equipment	1954
Automatic control	247
Automobiles	4
Aviation	178
Banking	161
Bills	2
Biochemistry	7
Biology	3
Book binding	37
Brewery	25
Business	225
Cables and cable production	85
Ceramics	19
Chemical fibers	26
Chemistry	12441
Coal	983
Commerce	720
Communications	14328
Computer networks	83
Computer numerical control	457
Computers	97
Construction	2831
Corporate governance	37
Criminal law	341
Cuba	1
Cultural studies	500
Customs	145
Cybernetics	129
Data processing	70
Demography	143
Dyalysis	233
Dyes	56
Earth sciences	6955
Ecology	106
Economics	23810
Education	893
Electric machinery	118
Electric motors	292
Electric traction	307
Electricity generation	179
Electrochemistry	61
Electronics	16860
Employment	41
Energy industry	1376
Environment	6830
European Union	8
Explosives and Explosive Ordnance Disposal	30
Fat-and-oil industry	14
Finances	11874
Fish farming pisciculture	1289
Fishery fishing industry	9
Food industry	1347
Footwear	83
Foreign trade	4
Forestry	1146
General	19894
Geography	383
Glass production	16
Government, administration and public services	212
Health care	4243
Hobbies and pastimes	850
Human rights activism	572
Hydrology	1
Ichthyology	3
Immigration and citizenship	741
Industry	9688
Information technology	13048
Insurance	1583
International law	88
International Monetary Fund	5609
International relations	9
International trade	188
Investment	53
Isolation	154
Jewelry	1
Labor law	1552
Labor organization	66
Latin	1
Latin American	8
Law	10947
Leather	43
Life sciences	4234
Lighting other than cinema	199
Linguistics	1
Logging	1
Logistics	2
Magnetics	257
Mammals	2
Marketing	1301
Mass media	3
Materials science	2081
Mathematics	2347
Measuring instruments	2484
Mechanic engineering	10083
Mechanics	50
Medical	24237
Medical appliances	3
Metallurgy	4889
Meteorology	7
Microscopy	22
Microsoft	8752
Military	6
Mineral products	90
Mineralogy	36
Mining	27
Municipal planning	539
Name of organization	1
Natural resourses and wildlife conservation	740
Natural sciences	4580
Nautical	430
Navigation	3
Navy	1
Nuclear and fusion power	143
Nuclear physics	647
Obsolete / dated	395
Obstetrics	2
Occupational health & safety	50
Oil / petroleum	188
Ophthalmology	4
Optics branch of physics	6
Ornithology	1
Packaging	1652
Paint, varnish and lacquer	33
Patents	5053
Pharmacology	30
Pharmacy and pharmacology	873
Philosophy	2
Photography	43
Physical sciences	574
Physics	157
Piezoelectric crystals	163
Plastics	56
Politics	1812
Polygraphy	18
Polymers	22
Postal service	23
Power electronics	124
Power lines	255
Power system protection	228
Printed circuit boards	6
Private international law	21
Procedural law	325
Project management	39
Psychology	8
Public relations	7
Pulp and paper industry	49
Radio	599
Radiolocation	1
Rail transport	257
Reliability	178
Religion	88
Research and development	186
Resins	29
Risk Management	26
Road works	2
Satellite communications	61
School	8
Scientific	320
Scuba diving	29
Security systems	135
Semiconductors	73
Shipbuilding	3
Social science	1944
Socialism	9
Sociology	82
Sound recording	176
Statistics	3962
Sugar production	44
Superconductivity	176
Surveying	11
Taxes	610
Technology	4231
Telecommunications	327
Telegraphy	297
Telephony	107
Textile industry	3454
Thermal Energy	307
Trade unions	173
Transformers	80
Transport	20517
Ultrasound	15
United Nations	440
United States	1
Vacuum tubes	35
Video recording	91
Waste management	31
Water supply	39
Welding	77
Wind Energy	38
Wood processing	42
Work flow	783