Classification
600 - Technology
620 - Engineering & allied operations
630 - Agriculture & related technologies
23
000 - Computer science, information & general works
17
580 - Plants (Botany)
16
363 - Other social problems & services
15
333 - Economics of land & energy
14
330 - Economics
13
551 - Geology, hydrology & meteorology
13
700 - The arts; fine & decorative arts
12
610 - Medicine & health
9
380 - Commerce, communications & transportation
7
900 - History & geography
5
320 - Political science
4
340 - Law
4
140 - Specific philosophical schools
3
658 - General management
3
540 - Chemistry & allied sciences
2
581 - Specific topics in natural history
2
720 - Architecture
2
297 - Islam, Babism & Bahai Faith
1
414 - Phonology & phonetics
1
657 - Accounting
1