Classification
540 - Chemistry & allied sciences
000 - Computer science, information & general works
384
700 - The arts; fine & decorative arts
357
600 - Technology
333
620 - Engineering & allied operations
257
333 - Economics of land & energy
253
610 - Medicine & health
243
363 - Other social problems & services
177
580 - Plants (Botany)
104
330 - Economics
80
900 - History & geography
76
140 - Specific philosophical schools
75
380 - Commerce, communications & transportation
73
576 - Genetics & evolution
68
500 - Natural sciences & mathematics
66
530 - Physics
43
414 - Phonology & phonetics
40
630 - Agriculture & related technologies
38
551 - Geology, hydrology & meteorology
30
581 - Specific topics in natural history
29
612 - Human physiology
29
615 - Pharmacology & therapeutics
29
304 - Factors affecting social behavior
24
370 - Education
20
320 - Political science
16
800 - Literature & rhetoric
13
340 - Law
11
720 - Architecture
11
300 - Social sciences
8
100 - Philosophy & psychology
6
301 - Sociology & anthropology
6
400 - Language
4
658 - General management
4
520 - Astronomy & allied sciences
3
590 - Animals (Zoology)
3
361 - Social problems & social welfare in general
2
657 - Accounting
2
660 - Chemical engineering
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
331 - Labor economics
1
510 - Mathematics
1
542 - Techniques, equipment & materials
1
650 - Management & auxiliary services
1
791 - Public performances
1