sistema de planificación, programación y presupuestación

Accounting	6
Agriculture	115
Antennas and waveguides	3
Astronautics	3
Automatic control	23
Banking	2
Business	1
Chemistry	70
Coal	3
Commerce	36
Communications	559
Computer networks	3
Computers	1
Construction	9
Corporate governance	2
Criminal law	11
Cultural studies	2
Customs	3
Data processing	2
Earth sciences	80
Ecology	2
Economy	88
Education	31
Electric machinery	5
Electric motors	10
Electric traction	3
Electricity generation	5
Electronics	448
Energy industry	30
Environment	149
Finances	221
Fish farming pisciculture	7
Food industry	1
Forestry	4
General	269
Geography	2
Government, administration and public services	2
Health care	41
Hobbies and pastimes	6
Immigration and citizenship	16
Industry	42
Information technology	380
Insurance	21
International law	1
International Monetary Fund	86
International trade	2
Isolation	1
Labor law	20
Law	68
Life sciences	33
Lighting other than cinema	1
Marketing	16
Materials science	12
Mathematics	7
Mechanic engineering	148
Medical	51
Metallurgy	13
Microsoft	133
Mineral products	1
Mining	1
Municipal planning	4
Natural sciences	45
Nuclear and fusion power	2
Nuclear physics	30
Obsolete / dated	1
Patents	4
Pharmacy and pharmacology	13
Physical sciences	2
Physics	1
Piezoelectric crystals	1
Politics	14
Power lines	1
Power system protection	1
Procedural law	1
Radio	7
Rail transport	11
Reliability	7
Religion	2
Research and development	1
Scientific	4
Security systems	1
Social science	19
Sociology	1
Sound recording	14
Statistics	46
Taxes	10
Technology	62
Telecommunications	4
Telephony	9
Thermal Energy	7
Transport	397
United Nations	4
Video recording	2
Welding	4
Wind Energy	2
Work flow	24