Classification
363 - Other social problems & services
380 - Commerce, communications & transportation
410 - Linguistics
330 - Economics
4
576 - Genetics & evolution
3
600 - Technology
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
320 - Political science
2
333 - Economics of land & energy
2
370 - Education
2
658 - General management
2
800 - Literature & rhetoric
2
900 - History & geography
2
160 - Logic
1
400 - Language
1
500 - Natural sciences & mathematics
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1