Accounting	6
Agriculture	35
Astronautics	1
Automated equipment	16
Automatic control	1
Aviation	2
Banking	3
Chemistry	51
Coal	12
Commerce	11
Communications	86
Construction	23
Criminal law	3
Data processing	4
Earth sciences	27
Economics	52
Education	7
Electric machinery	3
Electric traction	2
Electronics	67
Energy industry	24
Environment	49
European Union	6
Finances	48
Fish farming pisciculture	7
Food industry	4
Footwear	2
General	476
Geography	2
Government, administration and public services	5
Health care	86
Hobbies and pastimes	7
Human rights activism	5
Immigration and citizenship	22
Industry	73
Information technology	85
Insurance	19
International trade	5
Labor law	144
Law	432
Life sciences	7
Lighting other than cinema	4
Marketing	5
Materials science	26
Measuring instruments	5
Mechanic engineering	66
Medical	19
Metallurgy	40
Microsoft	40
Municipal planning	10
Natural sciences	10
Nuclear and fusion power	6
Nuclear physics	38
Obsolete / dated	22
Oil / petroleum	2
Packaging	3
Patents	12
Pharmacy and pharmacology	30
Politics	56
Rail transport	7
Research and development	2
Security systems	23
Social science	87
Sociology	2
Statistics	2
Taxes	1
Technology	19
Telecommunications	2
Telegraphy	1
Textile industry	1
Trade unions	9
Transformers	2
Transport	380
United Nations	12
Welding	2
Wind Energy	1