Classification
140 - Specific philosophical schools
330 - Economics
340 - Law
363 - Other social problems & services
400 - Language
600 - Technology
620 - Engineering & allied operations
2
000 - Computer science, information & general works
1
300 - Social sciences
1
333 - Economics of land & energy
1
370 - Education
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1