Classification
000 - Computer science, information & general works
68
001 - Knowledge
1
004 - Data processing & computer science
13
005 - Computer programming, programs & data
19
006 - Special computer methods
3
100 - Philosophy & psychology
4
140 - Specific philosophical schools
23
153 - Mental processes & intelligence
2
160 - Logic
1
170 - Ethics
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
7
302 - Social interaction
4
303 - Social processes
1
320 - Political science
17
330 - Economics
95
331 - Labor economics
32
332 - Financial economics
2
333 - Economics of land & energy
49
336 - Public finance
2
338 - Production
22
340 - Law
5
361 - Social problems & social welfare in general
3
363 - Other social problems & services
38
364 - Criminology
2
370 - Education
11
374 - Adult education
1
380 - Commerce, communications & transportation
40
381 - Commerce
9
384 - Communications; telecommunication
3
400 - Language
4
410 - Linguistics
5
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
23
530 - Physics
2
540 - Chemistry & allied sciences
3
551 - Geology, hydrology & meteorology
9
576 - Genetics & evolution
21
580 - Plants (Botany)
19
581 - Specific topics in natural history
4
600 - Technology
610 - Medicine & health
30
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
72
621 - Applied physics
1
629 - Other branches of engineering
4
630 - Agriculture & related technologies
16
650 - Management & auxiliary services
4
651 - Office services
2
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