Classification
300 - Social sciences
600 - Technology
620 - Engineering & allied operations
15
630 - Agriculture & related technologies
10
900 - History & geography
7
320 - Political science
6
100 - Philosophy & psychology
4
363 - Other social problems & services
4
301 - Sociology & anthropology
3
333 - Economics of land & energy
2
370 - Education
2
380 - Commerce, communications & transportation
2
551 - Geology, hydrology & meteorology
2
610 - Medicine & health
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
200 - Religion
1
330 - Economics
1
340 - Law
1
364 - Criminology
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
700 - The arts; fine & decorative arts
1
791 - Public performances
1