Classification
580 - Plants (Botany)
900 - History & geography
600 - Technology
28
620 - Engineering & allied operations
28
333 - Economics of land & energy
21
363 - Other social problems & services
16
700 - The arts; fine & decorative arts
14
330 - Economics
13
380 - Commerce, communications & transportation
12
610 - Medicine & health
5
630 - Agriculture & related technologies
5
000 - Computer science, information & general works
4
551 - Geology, hydrology & meteorology
4
576 - Genetics & evolution
4
720 - Architecture
4
140 - Specific philosophical schools
3
340 - Law
3
658 - General management
3
170 - Ethics
2
300 - Social sciences
2
320 - Political science
2
800 - Literature & rhetoric
2
297 - Islam, Babism & Bahai Faith
1
370 - Education
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
780 - Music
1