Classification
600 - Technology
241
620 - Engineering & allied operations
202
900 - History & geography
175
700 - The arts; fine & decorative arts
160
333 - Economics of land & energy
126
000 - Computer science, information & general works
69
363 - Other social problems & services
52
576 - Genetics & evolution
46
330 - Economics
39
540 - Chemistry & allied sciences
35
580 - Plants (Botany)
33
414 - Phonology & phonetics
28
380 - Commerce, communications & transportation
27
610 - Medicine & health
23
500 - Natural sciences & mathematics
18
340 - Law
16
530 - Physics
14
720 - Architecture
11
800 - Literature & rhetoric
10
140 - Specific philosophical schools
9
320 - Political science
6
551 - Geology, hydrology & meteorology
5
304 - Factors affecting social behavior
3
370 - Education
2
581 - Specific topics in natural history
2
615 - Pharmacology & therapeutics
2
658 - General management
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
170 - Ethics
1
301 - Sociology & anthropology
1
350 - Public administration & military science
1
400 - Language
1
550 - Earth sciences
1
612 - Human physiology
1
630 - Agriculture & related technologies
1
770 - Photography, photographs & computer art
1
791 - Public performances
1