Classification
340 - Law
16
330 - Economics
15
658 - General management
13
500 - Natural sciences & mathematics
10
331 - Labor economics
8
343 - Military, tax, trade & industrial law
8
332 - Financial economics
7
005 - Computer programming, programs & data
6
338 - Production
6
620 - Engineering & allied operations
6
346 - Private law
5
380 - Commerce, communications & transportation
5
300 - Social sciences
4
344 - Labor, social, education & cultural law
4
381 - Commerce
4
302 - Social interaction
3
621 - Applied physics
3
670 - Manufacturing
3
000 - Computer science, information & general works
2
006 - Special computer methods
2
363 - Other social problems & services
2
650 - Management & auxiliary services
2
664 - Food technology
2
745 - Decorative arts
2
770 - Photography, photographs & computer art
2
775 - Digital photography
2
025 - Library operations
1
153 - Mental processes & intelligence
1
158 - Applied psychology
1
333 - Economics of land & energy
1
337 - International economics
1
349 - Law of specific jurisdictions & areas
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
384 - Communications; telecommunication
1
512 - Algebra
1
571 - Physiology & related subjects
1
610 - Medicine & health
1
613 - Personal health & safety
1
614 - Incidence & prevention of disease
1
641 - Food & drink
1
651 - Office services
1
659 - Advertising & public relations
1
660 - Chemical engineering
1
741 - Drawing & drawings
1
778 - Fields & kinds of photography
1