Classification
610 - Medicine & health
700 - The arts; fine & decorative arts
333 - Economics of land & energy
26
600 - Technology
26
000 - Computer science, information & general works
22
363 - Other social problems & services
20
500 - Natural sciences & mathematics
19
330 - Economics
14
140 - Specific philosophical schools
13
580 - Plants (Botany)
12
620 - Engineering & allied operations
12
370 - Education
8
380 - Commerce, communications & transportation
8
576 - Genetics & evolution
7
900 - History & geography
7
320 - Political science
6
340 - Law
6
615 - Pharmacology & therapeutics
6
658 - General management
6
540 - Chemistry & allied sciences
5
612 - Human physiology
5
551 - Geology, hydrology & meteorology
4
630 - Agriculture & related technologies
4
100 - Philosophy & psychology
3
414 - Phonology & phonetics
3
200 - Religion
2
361 - Social problems & social welfare in general
2
581 - Specific topics in natural history
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
400 - Language
1
410 - Linguistics
1
530 - Physics
1