Classification
530 - Physics
000 - Computer science, information & general works
235
333 - Economics of land & energy
117
700 - The arts; fine & decorative arts
115
380 - Commerce, communications & transportation
41
600 - Technology
39
576 - Genetics & evolution
32
330 - Economics
31
500 - Natural sciences & mathematics
30
363 - Other social problems & services
28
620 - Engineering & allied operations
25
610 - Medicine & health
21
140 - Specific philosophical schools
19
340 - Law
19
540 - Chemistry & allied sciences
19
580 - Plants (Botany)
19
900 - History & geography
18
551 - Geology, hydrology & meteorology
12
658 - General management
11
630 - Agriculture & related technologies
9
100 - Philosophy & psychology
8
320 - Political science
8
414 - Phonology & phonetics
8
006 - Special computer methods
7
400 - Language
7
520 - Astronomy & allied sciences
7
370 - Education
6
800 - Literature & rhetoric
6
003 - Systems
5
304 - Factors affecting social behavior
5
300 - Social sciences
4
410 - Linguistics
4
720 - Architecture
3
160 - Logic
2
200 - Religion
2
550 - Earth sciences
2
581 - Specific topics in natural history
2
652 - Processes of written communication
2
780 - Music
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
296 - Judaism
1
301 - Sociology & anthropology
1
350 - Public administration & military science
1
590 - Animals (Zoology)
1
650 - Management & auxiliary services
1
657 - Accounting
1
770 - Photography, photographs & computer art
1