Classification
540 - Chemistry & allied sciences
620 - Engineering & allied operations
600 - Technology
190
700 - The arts; fine & decorative arts
92
363 - Other social problems & services
77
333 - Economics of land & energy
74
000 - Computer science, information & general works
57
900 - History & geography
56
610 - Medicine & health
37
330 - Economics
28
500 - Natural sciences & mathematics
26
380 - Commerce, communications & transportation
24
580 - Plants (Botany)
23
630 - Agriculture & related technologies
23
140 - Specific philosophical schools
19
576 - Genetics & evolution
16
530 - Physics
13
414 - Phonology & phonetics
11
551 - Geology, hydrology & meteorology
10
720 - Architecture
10
370 - Education
9
300 - Social sciences
8
320 - Political science
8
581 - Specific topics in natural history
7
590 - Animals (Zoology)
6
612 - Human physiology
6
304 - Factors affecting social behavior
4
400 - Language
4
800 - Literature & rhetoric
4
100 - Philosophy & psychology
3
301 - Sociology & anthropology
3
340 - Law
3
658 - General management
3
615 - Pharmacology & therapeutics
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
361 - Social problems & social welfare in general
1
657 - Accounting
1