Classification
500 - Natural sciences & mathematics
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
19
333 - Economics of land & energy
12
576 - Genetics & evolution
11
600 - Technology
10
620 - Engineering & allied operations
10
380 - Commerce, communications & transportation
9
330 - Economics
8
610 - Medicine & health
7
140 - Specific philosophical schools
6
900 - History & geography
6
363 - Other social problems & services
5
612 - Human physiology
4
300 - Social sciences
3
340 - Law
3
414 - Phonology & phonetics
3
540 - Chemistry & allied sciences
3
551 - Geology, hydrology & meteorology
3
580 - Plants (Botany)
3
581 - Specific topics in natural history
3
658 - General management
3
320 - Political science
1
370 - Education
1
530 - Physics
1
720 - Architecture
1