Classification
140 - Specific philosophical schools
000 - Computer science, information & general works
270
700 - The arts; fine & decorative arts
195
610 - Medicine & health
192
333 - Economics of land & energy
131
363 - Other social problems & services
112
330 - Economics
101
380 - Commerce, communications & transportation
78
900 - History & geography
76
600 - Technology
65
300 - Social sciences
60
370 - Education
60
540 - Chemistry & allied sciences
56
580 - Plants (Botany)
51
320 - Political science
50
551 - Geology, hydrology & meteorology
47
620 - Engineering & allied operations
46
170 - Ethics
37
500 - Natural sciences & mathematics
34
581 - Specific topics in natural history
32
576 - Genetics & evolution
30
100 - Philosophy & psychology
28
720 - Architecture
27
340 - Law
25
800 - Literature & rhetoric
23
301 - Sociology & anthropology
22
658 - General management
22
400 - Language
21
200 - Religion
20
304 - Factors affecting social behavior
20
630 - Agriculture & related technologies
18
530 - Physics
16
612 - Human physiology
14
414 - Phonology & phonetics
13
361 - Social problems & social welfare in general
12
410 - Linguistics
12
590 - Animals (Zoology)
9
780 - Music
7
297 - Islam, Babism & Bahai Faith
6
615 - Pharmacology & therapeutics
6
360 - Social problems & services; associations
3
120 - Epistemology, causation & humankind
2
160 - Logic
2
174 - Occupational ethics
2
550 - Earth sciences
2
657 - Accounting
2
920 - Biography, genealogy & insignia
2
344 - Labor, social, education & cultural law
1
364 - Criminology
1
398 - Folklore
1
more ...