Classification
363 - Other social problems & services
333 - Economics of land & energy
18
330 - Economics
16
000 - Computer science, information & general works
12
551 - Geology, hydrology & meteorology
12
700 - The arts; fine & decorative arts
11
600 - Technology
10
380 - Commerce, communications & transportation
9
620 - Engineering & allied operations
9
900 - History & geography
7
581 - Specific topics in natural history
5
610 - Medicine & health
5
320 - Political science
4
576 - Genetics & evolution
4
658 - General management
4
370 - Education
3
500 - Natural sciences & mathematics
3
580 - Plants (Botany)
3
800 - Literature & rhetoric
3
140 - Specific philosophical schools
2
340 - Law
2
530 - Physics
2
630 - Agriculture & related technologies
2
657 - Accounting
2
720 - Architecture
2
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
410 - Linguistics
1