Classification
363 - Other social problems & services
380 - Commerce, communications & transportation
600 - Technology
620 - Engineering & allied operations
92
333 - Economics of land & energy
91
700 - The arts; fine & decorative arts
81
900 - History & geography
79
330 - Economics
66
000 - Computer science, information & general works
59
140 - Specific philosophical schools
36
320 - Political science
35
610 - Medicine & health
30
551 - Geology, hydrology & meteorology
27
370 - Education
24
576 - Genetics & evolution
22
340 - Law
20
720 - Architecture
20
580 - Plants (Botany)
19
630 - Agriculture & related technologies
15
658 - General management
13
500 - Natural sciences & mathematics
10
800 - Literature & rhetoric
10
300 - Social sciences
8
304 - Factors affecting social behavior
8
400 - Language
8
581 - Specific topics in natural history
6
414 - Phonology & phonetics
5
530 - Physics
5
657 - Accounting
5
200 - Religion
4
170 - Ethics
3
361 - Social problems & social welfare in general
3
410 - Linguistics
3
540 - Chemistry & allied sciences
2
612 - Human physiology
2
650 - Management & auxiliary services
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
160 - Logic
1
301 - Sociology & anthropology
1
336 - Public finance
1
364 - Criminology
1
550 - Earth sciences
1
615 - Pharmacology & therapeutics
1