Classification
621 - Applied physics
676
629 - Other branches of engineering
247
330 - Economics
224
620 - Engineering & allied operations
218
320 - Political science
208
670 - Manufacturing
113
600 - Technology
41
300 - Social sciences
29
630 - Agriculture & related technologies
26
700 - The arts; fine & decorative arts
25
900 - History & geography
25
000 - Computer science, information & general works
16
333 - Economics of land & energy
16
160 - Logic
14
531 - Classical mechanics; solid mechanics
14
658 - General management
13
003 - Systems
11
610 - Medicine & health
11
580 - Plants (Botany)
10
530 - Physics
8
340 - Law
7
363 - Other social problems & services
7
500 - Natural sciences & mathematics
6
624 - Civil engineering
6
660 - Chemical engineering
6
006 - Special computer methods
5
338 - Production
5
745 - Decorative arts
5
770 - Photography, photographs & computer art
5
790 - Recreational & performing arts
5
509 - Historical, geographic & persons treatment
4
576 - Genetics & evolution
4
667 - Cleaning, color & coating technologies
4
005 - Computer programming, programs & data
3
140 - Specific philosophical schools
3
331 - Labor economics
3
380 - Commerce, communications & transportation
3
515 - Analysis
3
677 - Textiles
3
690 - Buildings
3
792 - Stage presentations
3
370 - Education
2
628 - Sanitary & municipal engineering
2
664 - Food technology
2
680 - Manufacture for specific uses
2
150 - Psychology
1
170 - Ethics
1
200 - Religion
1
303 - Social processes
1
304 - Factors affecting social behavior
1
more ...