Classification
600 - Technology
185
333 - Economics of land & energy
165
700 - The arts; fine & decorative arts
155
620 - Engineering & allied operations
131
000 - Computer science, information & general works
113
363 - Other social problems & services
111
330 - Economics
104
900 - History & geography
103
580 - Plants (Botany)
59
380 - Commerce, communications & transportation
54
540 - Chemistry & allied sciences
50
610 - Medicine & health
45
551 - Geology, hydrology & meteorology
44
140 - Specific philosophical schools
27
576 - Genetics & evolution
27
500 - Natural sciences & mathematics
24
320 - Political science
23
530 - Physics
21
630 - Agriculture & related technologies
21
414 - Phonology & phonetics
19
800 - Literature & rhetoric
14
370 - Education
13
340 - Law
12
720 - Architecture
12
581 - Specific topics in natural history
11
658 - General management
11
304 - Factors affecting social behavior
9
300 - Social sciences
7
612 - Human physiology
5
550 - Earth sciences
3
650 - Management & auxiliary services
3
657 - Accounting
3
100 - Philosophy & psychology
2
301 - Sociology & anthropology
2
615 - Pharmacology & therapeutics
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
336 - Public finance
1
361 - Social problems & social welfare in general
1
410 - Linguistics
1
791 - Public performances
1