Classification
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
340 - Law
400 - Language
1
414 - Phonology & phonetics
2
530 - Physics
1
576 - Genetics & evolution
2
600 - Technology
3
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2