Classification
363 - Other social problems & services
380 - Commerce, communications & transportation
540 - Chemistry & allied sciences
580 - Plants (Botany)
2
600 - Technology
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
140 - Specific philosophical schools
1
330 - Economics
1
333 - Economics of land & energy
1
340 - Law
1
400 - Language
1
610 - Medicine & health
1
658 - General management
1