Classification
340 - Law
900 - History & geography
320 - Political science
7
600 - Technology
5
330 - Economics
4
333 - Economics of land & energy
4
363 - Other social problems & services
4
620 - Engineering & allied operations
4
700 - The arts; fine & decorative arts
4
100 - Philosophy & psychology
2
370 - Education
2
610 - Medicine & health
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
170 - Ethics
1
200 - Religion
1
300 - Social sciences
1
301 - Sociology & anthropology
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
400 - Language
1
410 - Linguistics
1
414 - Phonology & phonetics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
657 - Accounting
1
920 - Biography, genealogy & insignia
1