Classification
000 - Computer science, information & general works
88
005 - Computer programming, programs & data
4
006 - Special computer methods
9
100 - Philosophy & psychology
5
140 - Specific philosophical schools
35
170 - Ethics
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
3
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
5
320 - Political science
6
330 - Economics
26
331 - Labor economics
2
333 - Economics of land & energy
110
338 - Production
1
340 - Law
7
363 - Other social problems & services
29
370 - Education
9
380 - Commerce, communications & transportation
63
384 - Communications; telecommunication
2
400 - Language
8
410 - Linguistics
1
414 - Phonology & phonetics
10
500 - Natural sciences & mathematics
21
510 - Mathematics
5
511 - General principles of mathematics
2
512 - Algebra
29
514 - Topology
2
515 - Analysis
1
516 - Geometry
1
530 - Physics
14
531 - Classical mechanics; solid mechanics
1
540 - Chemistry & allied sciences
21
550 - Earth sciences
2
551 - Geology, hydrology & meteorology
3
570 - Life sciences; biology
2
576 - Genetics & evolution
18
580 - Plants (Botany)
30
581 - Specific topics in natural history
1
600 - Technology
162
610 - Medicine & health
67
612 - Human physiology
5
615 - Pharmacology & therapeutics
7
620 - Engineering & allied operations
126
621 - Applied physics
5
628 - Sanitary & municipal engineering
1
630 - Agriculture & related technologies
7
650 - Management & auxiliary services
1
658 - General management
3
more ...