Classification
621 - Applied physics
21
670 - Manufacturing
15
629 - Other branches of engineering
11
658 - General management
9
660 - Chemical engineering
9
158 - Applied psychology
5
346 - Private law
4
620 - Engineering & allied operations
4
333 - Economics of land & energy
3
363 - Other social problems & services
3
519 - Probabilities & applied mathematics
3
628 - Sanitary & municipal engineering
3
004 - Data processing & computer science
2
005 - Computer programming, programs & data
2
006 - Special computer methods
2
300 - Social sciences
2
302 - Social interaction
2
320 - Political science
2
330 - Economics
2
340 - Law
2
370 - Education
2
690 - Buildings
2
001 - Knowledge
1
003 - Systems
1
338 - Production
1
343 - Military, tax, trade & industrial law
1
353 - Specific fields of public administration
1
362 - Social welfare problems & services
1
500 - Natural sciences & mathematics
1
515 - Analysis
1
530 - Physics
1
546 - Inorganic chemistry
1
547 - Organic chemistry
1
581 - Specific topics in natural history
1
604 - Special topics
1
610 - Medicine & health
1
616 - Diseases
1
624 - Civil engineering
1
641 - Food & drink
1
664 - Food technology
1
691 - Building materials
1
745 - Decorative arts
1
900 - History & geography
1