Classification
000 - Computer science, information & general works
2
370 - Education
540 - Chemistry & allied sciences
330 - Economics
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1