Classification
000 - Computer science, information & general works
610 - Medicine & health
700 - The arts; fine & decorative arts
351
333 - Economics of land & energy
205
600 - Technology
195
140 - Specific philosophical schools
178
580 - Plants (Botany)
176
363 - Other social problems & services
163
380 - Commerce, communications & transportation
118
330 - Economics
111
620 - Engineering & allied operations
111
540 - Chemistry & allied sciences
103
630 - Agriculture & related technologies
73
900 - History & geography
61
370 - Education
60
576 - Genetics & evolution
59
551 - Geology, hydrology & meteorology
54
320 - Political science
49
500 - Natural sciences & mathematics
45
658 - General management
42
581 - Specific topics in natural history
38
612 - Human physiology
30
800 - Literature & rhetoric
25
300 - Social sciences
24
720 - Architecture
24
414 - Phonology & phonetics
23
530 - Physics
23
304 - Factors affecting social behavior
22
615 - Pharmacology & therapeutics
20
100 - Philosophy & psychology
19
361 - Social problems & social welfare in general
19
340 - Law
18
400 - Language
18
170 - Ethics
17
410 - Linguistics
10
301 - Sociology & anthropology
9
200 - Religion
8
590 - Animals (Zoology)
5
360 - Social problems & services; associations
4
364 - Criminology
4
780 - Music
4
550 - Earth sciences
3
520 - Astronomy & allied sciences
2
616 - Diseases
2
001 - Knowledge
1
230 - Christianity & Christian theology
1
297 - Islam, Babism & Bahai Faith
1
350 - Public administration & military science
1
362 - Social welfare problems & services
1
398 - Folklore
1
more ...