Classification
333 - Economics of land & energy
700 - The arts; fine & decorative arts
140
600 - Technology
126
000 - Computer science, information & general works
121
363 - Other social problems & services
103
330 - Economics
101
620 - Engineering & allied operations
89
580 - Plants (Botany)
77
610 - Medicine & health
73
900 - History & geography
70
380 - Commerce, communications & transportation
58
320 - Political science
53
630 - Agriculture & related technologies
52
140 - Specific philosophical schools
45
540 - Chemistry & allied sciences
41
551 - Geology, hydrology & meteorology
33
370 - Education
23
576 - Genetics & evolution
20
340 - Law
19
500 - Natural sciences & mathematics
17
581 - Specific topics in natural history
17
658 - General management
16
800 - Literature & rhetoric
15
300 - Social sciences
13
414 - Phonology & phonetics
13
720 - Architecture
13
530 - Physics
12
304 - Factors affecting social behavior
10
100 - Philosophy & psychology
9
612 - Human physiology
8
170 - Ethics
7
361 - Social problems & social welfare in general
5
200 - Religion
3
400 - Language
3
301 - Sociology & anthropology
2
410 - Linguistics
2
615 - Pharmacology & therapeutics
2
650 - Management & auxiliary services
2
657 - Accounting
2
770 - Photography, photographs & computer art
2
780 - Music
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
297 - Islam, Babism & Bahai Faith
1
336 - Public finance
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
364 - Criminology
1
520 - Astronomy & allied sciences
1
550 - Earth sciences
1