Classification
700 - The arts; fine & decorative arts
800 - Literature & rhetoric
900 - History & geography
126
600 - Technology
57
000 - Computer science, information & general works
53
333 - Economics of land & energy
53
363 - Other social problems & services
44
140 - Specific philosophical schools
42
330 - Economics
39
620 - Engineering & allied operations
35
610 - Medicine & health
34
320 - Political science
31
380 - Commerce, communications & transportation
27
100 - Philosophy & psychology
24
576 - Genetics & evolution
23
200 - Religion
20
580 - Plants (Botany)
20
720 - Architecture
20
780 - Music
20
300 - Social sciences
19
400 - Language
19
410 - Linguistics
13
340 - Law
12
551 - Geology, hydrology & meteorology
12
500 - Natural sciences & mathematics
11
170 - Ethics
10
301 - Sociology & anthropology
10
370 - Education
10
304 - Factors affecting social behavior
9
297 - Islam, Babism & Bahai Faith
7
530 - Physics
7
630 - Agriculture & related technologies
7
658 - General management
7
398 - Folklore
6
581 - Specific topics in natural history
6
414 - Phonology & phonetics
5
791 - Public performances
5
540 - Chemistry & allied sciences
4
770 - Photography, photographs & computer art
4
120 - Epistemology, causation & humankind
3
361 - Social problems & social welfare in general
2
520 - Astronomy & allied sciences
2
590 - Animals (Zoology)
2
160 - Logic
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
920 - Biography, genealogy & insignia
1