Classification
000 - Computer science, information & general works
800 - Literature & rhetoric
700 - The arts; fine & decorative arts
54
363 - Other social problems & services
38
600 - Technology
37
333 - Economics of land & energy
35
330 - Economics
34
900 - History & geography
34
140 - Specific philosophical schools
28
610 - Medicine & health
25
380 - Commerce, communications & transportation
23
580 - Plants (Botany)
21
551 - Geology, hydrology & meteorology
17
620 - Engineering & allied operations
17
576 - Genetics & evolution
14
400 - Language
12
500 - Natural sciences & mathematics
12
100 - Philosophy & psychology
11
410 - Linguistics
11
320 - Political science
9
530 - Physics
9
581 - Specific topics in natural history
9
370 - Education
8
540 - Chemistry & allied sciences
8
630 - Agriculture & related technologies
7
720 - Architecture
6
304 - Factors affecting social behavior
5
170 - Ethics
4
200 - Religion
4
414 - Phonology & phonetics
4
658 - General management
4
120 - Epistemology, causation & humankind
3
340 - Law
3
590 - Animals (Zoology)
3
780 - Music
3
300 - Social sciences
2
361 - Social problems & social welfare in general
2
612 - Human physiology
2
650 - Management & auxiliary services
2
657 - Accounting
2
158 - Applied psychology
1
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
338 - Production
1
364 - Criminology
1
398 - Folklore
1
430 - Germanic languages; German
1
520 - Astronomy & allied sciences
1
615 - Pharmacology & therapeutics
1
more ...