Classification
000 - Computer science, information & general works
212
001 - Knowledge
1
100 - Philosophy & psychology
17
120 - Epistemology, causation & humankind
2
140 - Specific philosophical schools
103
160 - Logic
1
170 - Ethics
12
200 - Religion
11
297 - Islam, Babism & Bahai Faith
6
300 - Social sciences
38
301 - Sociology & anthropology
14
304 - Factors affecting social behavior
18
320 - Political science
164
330 - Economics
327
331 - Labor economics
7
333 - Economics of land & energy
306
336 - Public finance
1
338 - Production
2
340 - Law
49
344 - Labor, social, education & cultural law
8
350 - Public administration & military science
4
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
9
363 - Other social problems & services
364 - Criminology
3
368 - Insurance
6
370 - Education
52
380 - Commerce, communications & transportation
128
400 - Language
14
410 - Linguistics
9
414 - Phonology & phonetics
17
500 - Natural sciences & mathematics
52
520 - Astronomy & allied sciences
3
530 - Physics
5
540 - Chemistry & allied sciences
28
550 - Earth sciences
3
551 - Geology, hydrology & meteorology
172
576 - Genetics & evolution
47
580 - Plants (Botany)
82
581 - Specific topics in natural history
89
590 - Animals (Zoology)
2
600 - Technology
279
610 - Medicine & health
139
612 - Human physiology
7
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
216
628 - Sanitary & municipal engineering
247
630 - Agriculture & related technologies
89
650 - Management & auxiliary services
2
657 - Accounting
10
more ...