Classification
600 - Technology
620 - Engineering & allied operations
319
700 - The arts; fine & decorative arts
313
900 - History & geography
296
333 - Economics of land & energy
228
000 - Computer science, information & general works
197
380 - Commerce, communications & transportation
122
363 - Other social problems & services
86
330 - Economics
85
610 - Medicine & health
85
576 - Genetics & evolution
84
140 - Specific philosophical schools
57
580 - Plants (Botany)
57
500 - Natural sciences & mathematics
49
720 - Architecture
42
630 - Agriculture & related technologies
28
340 - Law
27
400 - Language
26
658 - General management
21
370 - Education
20
530 - Physics
15
800 - Literature & rhetoric
15
320 - Political science
14
551 - Geology, hydrology & meteorology
13
414 - Phonology & phonetics
10
300 - Social sciences
8
540 - Chemistry & allied sciences
8
410 - Linguistics
6
100 - Philosophy & psychology
4
170 - Ethics
4
650 - Management & auxiliary services
4
770 - Photography, photographs & computer art
4
550 - Earth sciences
3
657 - Accounting
3
780 - Music
3
120 - Epistemology, causation & humankind
2
160 - Logic
2
301 - Sociology & anthropology
2
581 - Specific topics in natural history
2
615 - Pharmacology & therapeutics
2
304 - Factors affecting social behavior
1
361 - Social problems & social welfare in general
1