Classification
530 - Physics
330 - Economics
10
000 - Computer science, information & general works
7
333 - Economics of land & energy
7
600 - Technology
4
500 - Natural sciences & mathematics
3
700 - The arts; fine & decorative arts
3
320 - Political science
2
340 - Law
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
610 - Medicine & health
2
900 - History & geography
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
170 - Ethics
1
200 - Religion
1
300 - Social sciences
1
301 - Sociology & anthropology
1
332 - Financial economics
1
350 - Public administration & military science
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1
658 - General management
1