Classification
300 - Social sciences
330 - Economics
333 - Economics of land & energy
2
363 - Other social problems & services
2
600 - Technology
2
700 - The arts; fine & decorative arts
140 - Specific philosophical schools
1
320 - Political science
1
340 - Law
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
500 - Natural sciences & mathematics
1
620 - Engineering & allied operations
1
650 - Management & auxiliary services
1
657 - Accounting
1