Classification
363 - Other social problems & services
380 - Commerce, communications & transportation
600 - Technology
900 - History & geography
620 - Engineering & allied operations
70
700 - The arts; fine & decorative arts
48
333 - Economics of land & energy
47
330 - Economics
29
000 - Computer science, information & general works
26
720 - Architecture
18
140 - Specific philosophical schools
17
551 - Geology, hydrology & meteorology
14
320 - Political science
12
576 - Genetics & evolution
12
340 - Law
10
370 - Education
10
610 - Medicine & health
10
580 - Plants (Botany)
9
800 - Literature & rhetoric
7
658 - General management
6
400 - Language
5
500 - Natural sciences & mathematics
5
304 - Factors affecting social behavior
4
300 - Social sciences
3
630 - Agriculture & related technologies
3
170 - Ethics
2
200 - Religion
2
414 - Phonology & phonetics
2
530 - Physics
2
581 - Specific topics in natural history
2
657 - Accounting
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
410 - Linguistics
1
550 - Earth sciences
1
650 - Management & auxiliary services
1