Classification
540 - Chemistry & allied sciences
610 - Medicine & health
700 - The arts; fine & decorative arts
104
000 - Computer science, information & general works
103
333 - Economics of land & energy
60
580 - Plants (Botany)
50
140 - Specific philosophical schools
45
363 - Other social problems & services
45
600 - Technology
42
620 - Engineering & allied operations
36
380 - Commerce, communications & transportation
20
330 - Economics
19
615 - Pharmacology & therapeutics
18
612 - Human physiology
15
304 - Factors affecting social behavior
12
576 - Genetics & evolution
12
900 - History & geography
12
630 - Agriculture & related technologies
11
500 - Natural sciences & mathematics
9
581 - Specific topics in natural history
9
414 - Phonology & phonetics
8
551 - Geology, hydrology & meteorology
6
300 - Social sciences
5
320 - Political science
4
370 - Education
4
100 - Philosophy & psychology
2
340 - Law
2
400 - Language
2
530 - Physics
2
800 - Literature & rhetoric
2
170 - Ethics
1
301 - Sociology & anthropology
1
361 - Social problems & social welfare in general
1
590 - Animals (Zoology)
1
720 - Architecture
1