Classification
330 - Economics
610 - Medicine & health
700 - The arts; fine & decorative arts
333 - Economics of land & energy
76
600 - Technology
64
000 - Computer science, information & general works
63
363 - Other social problems & services
62
140 - Specific philosophical schools
58
620 - Engineering & allied operations
34
380 - Commerce, communications & transportation
33
320 - Political science
32
900 - History & geography
31
551 - Geology, hydrology & meteorology
27
580 - Plants (Botany)
27
370 - Education
23
630 - Agriculture & related technologies
22
658 - General management
17
340 - Law
12
800 - Literature & rhetoric
12
304 - Factors affecting social behavior
11
576 - Genetics & evolution
11
720 - Architecture
11
540 - Chemistry & allied sciences
10
100 - Philosophy & psychology
9
581 - Specific topics in natural history
9
500 - Natural sciences & mathematics
7
200 - Religion
6
361 - Social problems & social welfare in general
6
300 - Social sciences
5
400 - Language
4
170 - Ethics
3
301 - Sociology & anthropology
3
530 - Physics
3
612 - Human physiology
3
338 - Production
2
360 - Social problems & services; associations
2
410 - Linguistics
2
414 - Phonology & phonetics
2
550 - Earth sciences
2
615 - Pharmacology & therapeutics
2
297 - Islam, Babism & Bahai Faith
1
350 - Public administration & military science
1
362 - Social welfare problems & services
1
520 - Astronomy & allied sciences
1
657 - Accounting
1
791 - Public performances
1