Classification
700 - The arts; fine & decorative arts
380 - Commerce, communications & transportation
298
600 - Technology
158
333 - Economics of land & energy
147
000 - Computer science, information & general works
134
620 - Engineering & allied operations
134
900 - History & geography
117
363 - Other social problems & services
89
610 - Medicine & health
80
330 - Economics
65
140 - Specific philosophical schools
55
576 - Genetics & evolution
45
320 - Political science
38
580 - Plants (Botany)
38
551 - Geology, hydrology & meteorology
36
500 - Natural sciences & mathematics
34
540 - Chemistry & allied sciences
26
720 - Architecture
23
340 - Law
21
414 - Phonology & phonetics
20
530 - Physics
17
658 - General management
17
370 - Education
15
612 - Human physiology
13
630 - Agriculture & related technologies
11
304 - Factors affecting social behavior
8
800 - Literature & rhetoric
8
400 - Language
7
300 - Social sciences
6
581 - Specific topics in natural history
6
615 - Pharmacology & therapeutics
5
100 - Philosophy & psychology
4
410 - Linguistics
3
200 - Religion
2
650 - Management & auxiliary services
2
657 - Accounting
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
297 - Islam, Babism & Bahai Faith
1
361 - Social problems & social welfare in general
1
550 - Earth sciences
1
590 - Animals (Zoology)
1
770 - Photography, photographs & computer art
1