Classification
320 - Political science
600 - Technology
700 - The arts; fine & decorative arts
330 - Economics
96
333 - Economics of land & energy
66
000 - Computer science, information & general works
57
363 - Other social problems & services
53
900 - History & geography
53
620 - Engineering & allied operations
51
380 - Commerce, communications & transportation
39
140 - Specific philosophical schools
30
551 - Geology, hydrology & meteorology
26
610 - Medicine & health
24
370 - Education
19
300 - Social sciences
18
630 - Agriculture & related technologies
16
720 - Architecture
16
100 - Philosophy & psychology
13
340 - Law
13
576 - Genetics & evolution
12
581 - Specific topics in natural history
11
658 - General management
10
170 - Ethics
9
200 - Religion
8
580 - Plants (Botany)
8
800 - Literature & rhetoric
8
301 - Sociology & anthropology
6
361 - Social problems & social welfare in general
6
400 - Language
6
500 - Natural sciences & mathematics
6
304 - Factors affecting social behavior
5
530 - Physics
4
657 - Accounting
4
780 - Music
4
297 - Islam, Babism & Bahai Faith
3
410 - Linguistics
3
520 - Astronomy & allied sciences
3
360 - Social problems & services; associations
2
364 - Criminology
2
414 - Phonology & phonetics
2
615 - Pharmacology & therapeutics
2
770 - Photography, photographs & computer art
2
120 - Epistemology, causation & humankind
1
350 - Public administration & military science
1
398 - Folklore
1
540 - Chemistry & allied sciences
1
603 - Dictionaries & encyclopedias
1
612 - Human physiology
1
650 - Management & auxiliary services
1