Classification
610 - Medicine & health
900 - History & geography
333 - Economics of land & energy
17
600 - Technology
14
700 - The arts; fine & decorative arts
11
100 - Philosophy & psychology
8
300 - Social sciences
8
320 - Political science
8
620 - Engineering & allied operations
8
000 - Computer science, information & general works
7
301 - Sociology & anthropology
6
330 - Economics
5
370 - Education
5
363 - Other social problems & services
4
380 - Commerce, communications & transportation
4
720 - Architecture
4
140 - Specific philosophical schools
2
364 - Criminology
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
800 - Literature & rhetoric
2
200 - Religion
1
340 - Law
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
612 - Human physiology
1
630 - Agriculture & related technologies
1
658 - General management
1