Classification
000 - Computer science, information & general works
530 - Physics
333 - Economics of land & energy
4
330 - Economics
3
610 - Medicine & health
3
320 - Political science
2
363 - Other social problems & services
2
370 - Education
2
380 - Commerce, communications & transportation
2
581 - Specific topics in natural history
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
170 - Ethics
1
200 - Religion
1
301 - Sociology & anthropology
1
340 - Law
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
600 - Technology
1
620 - Engineering & allied operations
1
658 - General management
1