Classification
658 - General management
51
629 - Other branches of engineering
27
616 - Diseases
18
620 - Engineering & allied operations
18
621 - Applied physics
18
650 - Management & auxiliary services
16
670 - Manufacturing
15
005 - Computer programming, programs & data
12
320 - Political science
11
641 - Food & drink
11
664 - Food technology
11
004 - Data processing & computer science
9
617 - Surgery & related medical specialties
9
006 - Special computer methods
8
344 - Labor, social, education & cultural law
8
343 - Military, tax, trade & industrial law
6
610 - Medicine & health
6
624 - Civil engineering
6
333 - Economics of land & energy
5
370 - Education
5
300 - Social sciences
4
301 - Sociology & anthropology
4
340 - Law
4
341 - Law of nations
4
614 - Incidence & prevention of disease
4
690 - Buildings
4
003 - Systems
3
040 - [Unassigned]
3
304 - Factors affecting social behavior
3
306 - Culture & institutions
3
327 - International relations
3
338 - Production
3
510 - Mathematics
3
570 - Life sciences; biology
3
571 - Physiology & related subjects
3
579 - Microorganisms, fungi & algae
3
660 - Chemical engineering
3
305 - Social groups
2
361 - Social problems & social welfare in general
2
551 - Geology, hydrology & meteorology
2
612 - Human physiology
2
613 - Personal health & safety
2
930 - History of ancient world to ca. 499
2
025 - Library operations
1
303 - Social processes
1
330 - Economics
1
332 - Financial economics
1
337 - International economics
1
339 - Macroeconomics & related topics
1
342 - Constitutional & administrative law
1
more ...