Classification
160 - Logic
500 - Natural sciences & mathematics
600 - Technology
000 - Computer science, information & general works
2
100 - Philosophy & psychology
2
530 - Physics
2
700 - The arts; fine & decorative arts
2
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
300 - Social sciences
1
330 - Economics
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
900 - History & geography
1