Classification
380 - Commerce, communications & transportation
410 - Linguistics
610 - Medicine & health
000 - Computer science, information & general works
4
700 - The arts; fine & decorative arts
4
140 - Specific philosophical schools
3
333 - Economics of land & energy
3
363 - Other social problems & services
3
900 - History & geography
3
320 - Political science
2
330 - Economics
2
370 - Education
2
400 - Language
2
500 - Natural sciences & mathematics
2
576 - Genetics & evolution
2
600 - Technology
2
100 - Philosophy & psychology
1
170 - Ethics
1
200 - Religion
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
340 - Law
1
620 - Engineering & allied operations
1
658 - General management
1