Classification
363 - Other social problems & services
400 - Language
000 - Computer science, information & general works
3
600 - Technology
3
620 - Engineering & allied operations
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
330 - Economics
2
333 - Economics of land & energy
2
140 - Specific philosophical schools
1
320 - Political science
1
370 - Education
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
657 - Accounting
1
658 - General management
1
720 - Architecture
1