Classification
333 - Economics of land & energy
43
720 - Architecture
900 - History & geography
600 - Technology
40
620 - Engineering & allied operations
35
700 - The arts; fine & decorative arts
35
363 - Other social problems & services
21
000 - Computer science, information & general works
19
330 - Economics
18
380 - Commerce, communications & transportation
18
610 - Medicine & health
15
576 - Genetics & evolution
10
370 - Education
7
580 - Plants (Botany)
7
800 - Literature & rhetoric
7
551 - Geology, hydrology & meteorology
6
140 - Specific philosophical schools
4
170 - Ethics
4
320 - Political science
4
340 - Law
3
630 - Agriculture & related technologies
3
300 - Social sciences
2
658 - General management
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
400 - Language
1
500 - Natural sciences & mathematics
1
657 - Accounting
1