Classification
363 - Other social problems & services
900 - History & geography
700 - The arts; fine & decorative arts
14
320 - Political science
12
333 - Economics of land & energy
11
330 - Economics
9
600 - Technology
8
620 - Engineering & allied operations
7
000 - Computer science, information & general works
6
380 - Commerce, communications & transportation
5
610 - Medicine & health
5
370 - Education
4
100 - Philosophy & psychology
3
140 - Specific philosophical schools
3
300 - Social sciences
3
551 - Geology, hydrology & meteorology
3
200 - Religion
2
301 - Sociology & anthropology
2
340 - Law
2
414 - Phonology & phonetics
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
550 - Earth sciences
1
581 - Specific topics in natural history
1
612 - Human physiology
1
720 - Architecture
1