Classification
000 - Computer science, information & general works
170 - Ethics
140 - Specific philosophical schools
5
500 - Natural sciences & mathematics
3
600 - Technology
3
610 - Medicine & health
3
100 - Philosophy & psychology
2
330 - Economics
2
370 - Education
2
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
620 - Engineering & allied operations
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
300 - Social sciences
1
320 - Political science
1
333 - Economics of land & energy
1
340 - Law
1
361 - Social problems & social welfare in general
1
400 - Language
1
530 - Physics
1
540 - Chemistry & allied sciences
1
630 - Agriculture & related technologies
1
920 - Biography, genealogy & insignia
1