Classification
320 - Political science
340 - Law
363 - Other social problems & services
380 - Commerce, communications & transportation
576 - Genetics & evolution
600 - Technology
140 - Specific philosophical schools
3
500 - Natural sciences & mathematics
3
620 - Engineering & allied operations
3
700 - The arts; fine & decorative arts
3
720 - Architecture
3
900 - History & geography
3
000 - Computer science, information & general works
1
330 - Economics
1
333 - Economics of land & energy
1