Accounting	20
Acridology	2
Agriculture	235
Animal husbandry	33
Antennas and waveguides	6
Astronautics	7
Automated equipment	36
Automatic control	30
Aviation	4
Banking	3
Biology	1
Biotechnology	4
Botany	4
Business	2
Cables and cable production	1
Canada	3
Chemistry	86
Cinematography	3
Climatology	1
Coal	6
Commerce	60
Communications	1000
Computer networks	6
Computer numerical control	44
Computers	5
Construction	27
Corporate governance	28
Criminal law	23
Cultural studies	6
Customs	3
Data processing	39
Dyalysis	4
Earth sciences	140
Ecology	2
Economics	178
Education	65
Electric machinery	6
Electric motors	10
Electric traction	1
Electricity generation	4
Electronics	684
Energy industry	64
Environment	235
Finances	387
Fish farming pisciculture	14
Fishery fishing industry	24
Food industry	18
Food service and catering	2
Forestry	38
General	556
Genetics	9
Geography	4
Government, administration and public services	6
Health care	130
Hobbies and pastimes	8
Horticulture	3
Human rights activism	1
Hydrology	1
Hygiene	1
Immigration and citizenship	36
Industry	60
Information technology	934
Insurance	28
International law	1
International Monetary Fund	140
International trade	5
Isolation	1
Labor law	27
Labor organization	9
Laboratory equipment	1
Law	106
Life sciences	75
Lighting other than cinema	2
Loading equipment	20
Magnetics	4
Marketing	24
Materials science	27
Mathematics	12
Measuring instruments	32
Mechanic engineering	125
Mechanics	1
Medical	194
Metallurgy	26
Mexican	18
Microsoft	161
Mineral products	6
Mineralogy	11
Mining	2
Municipal planning	6
Name of organization	319
Natural sciences	89
Navigation	1
Nuclear and fusion power	4
Nuclear physics	39
Obsolete / dated	10
Oil / petroleum	1
Packaging	14
Patents	46
Pest control	5
Pharmacy and pharmacology	18
Physical sciences	5
Physics	3
Piezoelectric crystals	2
Planning	3
Politics	104
Power lines	2
Power system protection	1
Procedural law	1
Pulp and paper industry	6
Radio	21
Rail transport	11
Reliability	10
Religion	4
Remote sensing	15
Research and development	4
Satellite communications	1
Scientific	9
Security systems	4
Social science	48
Sociology	6
Soil science	4
Sound recording	15
Spanish	8
Statistics	120
Taxes	31
Technology	86
Telecommunications	7
Telephony	11
Textile industry	44
Thermal Energy	7
Transport	714
United Nations	248
Veterinary medicine	2
Video recording	2
Water resources	55
Welding	4
Wind Energy	1
Wood processing	1
Work flow	71


Sistema abbr.
comp., MS	Système
sistema abbr.
comp., MS	système
crim.law. law int. law.	cadre
law econ.	doctrine


Pascal abbr.
industr. construct. chem.	Pa
pascal abbr.
health.	Pa


DEN abbr.
stat.	déviation normale équivalente
dele abbr.
commun.	deleatur


computación abbr.
econ. IT	computation