Classification
333 - Economics of land & energy
414 - Phonology & phonetics
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
576 - Genetics & evolution
2
600 - Technology
2
620 - Engineering & allied operations
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
330 - Economics
1
400 - Language
1
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
1
720 - Architecture
1
900 - History & geography
1