Classification
000 - Computer science, information & general works
49
001 - Knowledge
1
100 - Philosophy & psychology
6
140 - Specific philosophical schools
37
160 - Logic
1
170 - Ethics
5
200 - Religion
5
297 - Islam, Babism & Bahai Faith
2
300 - Social sciences
11
301 - Sociology & anthropology
5
304 - Factors affecting social behavior
7
320 - Political science
40
330 - Economics
66
331 - Labor economics
3
332 - Financial economics
1
333 - Economics of land & energy
63
338 - Production
1
340 - Law
18
350 - Public administration & military science
1
361 - Social problems & social welfare in general
7
362 - Social welfare problems & services
1
363 - Other social problems & services
364 - Criminology
2
368 - Insurance
1
370 - Education
18
380 - Commerce, communications & transportation
34
400 - Language
7
410 - Linguistics
3
414 - Phonology & phonetics
5
500 - Natural sciences & mathematics
23
509 - Historical, geographic & persons treatment
1
530 - Physics
3
540 - Chemistry & allied sciences
12
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
29
576 - Genetics & evolution
15
580 - Plants (Botany)
11
581 - Specific topics in natural history
14
600 - Technology
53
610 - Medicine & health
73
612 - Human physiology
6
614 - Incidence & prevention of disease
1
615 - Pharmacology & therapeutics
3
616 - Diseases
1
620 - Engineering & allied operations
41
628 - Sanitary & municipal engineering
7
629 - Other branches of engineering
1
630 - Agriculture & related technologies
8
650 - Management & auxiliary services
1
658 - General management
16
more ...